Shop by Brand: Harken

29mm Triple Carbo Air Block with Swivel

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming.

Specifications:

• Sheave: 29mm / 1-1/8in.
• Length: 73mm / 2-7/8in.
• Weight: 74g / 2.6oz
• Shackle pin: 5mm / 3/16in
• Maximum line: 8mm / 5/16in
• Maximum working load: 449kg/ 990lb
• Breaking load: 907kg / 2000lb

35 Self-Tailing Radial Aluminum Winch - 2 Speed

The Radial winch drum’s gripping surface is shaped for each winch size and drum material and features diagonal ribs (rather than textured abrasive materials) to maximize gripping power and greatly reduce line wear. The self-tailing mechanism on the winch means that one crew member can quickly and easily trim or raise sails.

Specifications:

• Material: Aluminum
• Configuration: Self-tailing
• Speed: 2
• Drum: 80mm/ 3-1/8in
• Base: 149 mm/ 5-7/8in
• Height: 170mm/ 6-11/16in
• Weight: 3.6kg/ 7.9lb
• Line entry height: 79mm/ 3-1/8in
• Minimum line: 8mm/ 5/16in
• Maximum line: 12mm/1/2in
• Fastener circle: 123mm/ 4-7/8in
• Fasteners: 6 SH mm/ 1/4 SH in
• Number of fasteners: 5
• Gear ratio-1: 2.13
• Gear ratio-2: 5.65
• Power ratio-1: 13.50
• Power ration-2: 35.90
• Available power: Manual

37.12mm Forged Eyestrap

Eyestraps are useful accessories. They form light-duty mounting bases for blocks, serve as lash-down points, and can be used for fairleads. 

Specifications:

• Weight: 10g / .35oz
• Fasteners: 5 RH mm / #10 RH in
• Breaking load: 1130 kg / 2500lb

38mm Double Big Bullet Block

Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of styles lets these blocks adapt to almost all control line applications. 

Features:

• Sheave: 38mm (1-1/2")
• Maximum Line: 10mm (3/8")
• Maximum Working Load: 272kg (600lb)

38mm Double Big Bullet Block with Becket

Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of styles lets these blocks adapt to almost all control line applications. 

Features:

• Sheave: 38mm (1-1/2")
• Maximum Line: 10mm (3/8")
• Maximum Working Load: 272kg (600lb)

38mm Single Big Bullet Block

Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of styles lets these blocks adapt to almost all control line applications. 

Features:

• Sheave: 38mm (1-1/2")
• Maximum Line: 10mm (3/8")
• Maximum Working Load: 136kg (300lb)

38mm Single Big Bullet Block with Becket

Low-friction Bullet blocks lead control lines aft. They are compact and lightweight, with fast trim and release under high or low loads. A range of styles lets these blocks adapt to almost all control line applications. 

Features:

• Sheave: 38mm (1-1/2")
• Maximum Line: 10mm (3/8")
• Maximum Working Load: 136kg (300lb)

40 Self-Tailing Radial Aluminum Winch - 2 Speed

The Radial winch drum’s gripping surface is shaped for each winch size and drum material and features diagonal ribs (rather than textured abrasive materials) to maximize gripping power and greatly reduce line wear. The self-tailing mechanism on the winch means that one crew member can quickly and easily trim or raise sails.

Specifications:

• Material: Aluminum
• Configuration: Self-tailing
• Speed: 2
• Drum: 80mm/ 3-1/8in
• Base: 157 mm/ 6-3/16in
• Height: 175mm/ 6-7/8in
• Weight: 3.8kg/ 8.4lb
• Line entry height: 82mm/ 3-1/4in
• Minimum line: 8mm/ 5/16in
• Maximum line: 12mm/1/2in
• Fastener circle: 123mm/ 4-7/8in
• Fasteners: 6 SH mm/ 1/4 SH in
• Number of fasteners: 5
• Gear ratio-1: 2.13
• Gear ratio-2: 6.28
• Power ratio-1: 13.50
• Power ration-2: 39.90
• Available power: Manual

40mm Carbo Air Block with Cam Cleat

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. 

Specifications:

• Sheave Ø (mm)40 mm
• Sheave Ø (in)1 9/16 in
• Maximum line Ø (mm)6 mm
• Maximum line Ø (in)1/4 in
• Maximum working load (kg)68 kg
• Maximum working load (lb)150 lb

40mm Carbo Air Block with Cam Cleat & Becket

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming.

Specifications:

• Sheave Ø (mm)40 mm
• Sheave Ø (in)1 9/16 in
• Maximum line Ø (mm)6 mm
• Maximum line Ø (in)1/4 in
• Maximum working load (kg)136 kg
• Maximum working load (lb)300 lb

40mm Carbo Air Block with Swivel

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming.

Specifications:

• Sheave: 40mm / 1-9/ 16in
• Length: 86mm / 3-3/8in
• Weight: 44g / 1.6oz
• Shackle pin: 4mm / 5/32in
• Maximum line: 10mm / 3/8in
• Maximum working load: 220kg / 485lb
• Breaking load: 735kg / 1620lb

40mm Carbo Air Cheek Block

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. 

Specifications:

• Sheave Ø (mm)40 mm
• Sheave Ø (in)1 9/16 in
• Maximum line Ø (mm)10 mm
• Maximum line Ø (in)3/8 in
• Maximum working load (kg)220 kg
• Maximum working load (lb)485 lb

40mm Carbo Air Double Fixed Block

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. 

Speciications:

• Sheave Ø (mm)40 mm
• Sheave Ø (in)1 9/16 in
• Maximum line Ø (mm)10 mm
• Maximum line Ø (in)3/8 in
• Maximum working load (kg)440 kg
• Maximum working load (lb)970 lb

40mm Carbo Air Double Fixed Block with Becket

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. 

Specifications:

• Sheave Ø (mm)40 mm
• Sheave Ø (in)1 9/16 in
• Maximum line Ø (mm)10 mm
• Maximum line Ø (in)3/8 in
• Maximum working load (kg)440 kg
• Maximum working load (lb)970 lb

40mm Carbo Air Double Swivel Block

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. 

Specifications:

• Sheave Ø (mm)40 mm
• Sheave Ø (in)1 9/16 in
• Maximum line Ø (mm)10 mm
• Maximum line Ø (in)3/8 in
• Maximum working load (kg)440 kg
• Maximum working load (lb)970 lb

40mm Carbo Air Double Swivel Block with Becket

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. 

Specifications:

• Sheave Ø (mm)40 mm
• Sheave Ø (in)1 9/16 in
• Maximum line Ø (mm)10 mm
• Maximum line Ø (in)3/8 in
• Maximum working load (kg)440 kg
• Maximum working load (lb)970 lb

40mm Carbo Air Fiddle Block with Swivel

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken® Black Magic® line, these small, compact blocks have very high working loads for safe, easy trimming. The 40 mm fiddle is an excellent choice for 3:1 and 4:1 tackles on dinghy vangs and mainsheets, as well as for controls such as cunninghams and internal boom outhauls on larger boats.

Specifications:

• Sheave: 40mm / 1-9/16in
• Length: 115mm / 4-1/2in
• Weight: 51g / 1.8oz
• Shackle pin: 4mm / 5/32in
• Maximum line: 10mm / 3/8in
• Maximum working load: 220kg / 485lb
• Breaking load: 735kg / 1620lb

40mm Carbo Air Fiddle Block with Swivel & Becket

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken® Black Magic® line, these small, compact blocks have very high working loads for safe, easy trimming. The 40 mm fiddle is an excellent choice for 3:1 and 4:1 tackles on dinghy vangs and mainsheets, as well as for controls such as cunninghams and internal boom outhauls on larger boats.

Specifications:

• Sheave: 40mm / 1-9/16in
• Length: 131mm / 5-1/8in
• Weight: 54g / 1.9oz
• Shackle pin: 4mm / 5/32in
• Maximum line: 10mm / 3/8in
• Maximum working load: 220kg / 485lb
• Breaking load: 735kg / 1620lb

40mm Carbo Air Pivoting Lead Block with Aluminum Cam-Matic® Cleat

High-strength pivoting lead blocks with cams are used for halyard controls on larger keelboats and as “headknockers” on dinghies and beachcats for sheeting directly from the boom. Hole spacing and rivet size are the same as Classic models, making upgrades easy. Cam reverses for either up or down cleating.

Can be used as becket block.

Specifications:

• Sheave Ø (mm)40 mm
• Sheave Ø (in)1 9/16 in
• Maximum line Ø (mm)10 mm
• Maximum line Ø (in)3/8 in
• Maximum working load (kg)136 kg
• Maximum working load (lb)300 lb

40mm Carbo Air Triple Swivel Block

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. 

Specifications:

• Sheave Ø (mm)40 mm
• Sheave Ø (in)1 9/16 in
• Maximum line Ø (mm)10 mm
• Maximum line Ø (in)3/8 in
• Maximum working load (kg)660 kg
• Maximum working load (lb)1455 lb

40mm Carbo Air Triple Swivel Block with Becket

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. 

Specifications:

• Sheave Ø (mm)40 mm
• Sheave Ø (in)1 9/16 in
• Maximum line Ø (mm)10 mm
• Maximum line Ø (in)3/8 in
• Maximum working load (kg)660 kg
• Maximum working load (lb)1455 lb

40mm Carbo Block 90° Fixed Head

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. 

Features:

• Sheave Ø (mm): 40 mm
• Sheave Ø (in): 1-9/16 in
• Maximum line Ø (mm): 10 mm
• Maximum line Ø (in): 3/8 in
• Maximum working load (kg): 220 kg
• Maximum working load (lb): 485 lb

40mm Carbo Block Single with Swivel & Bracket

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. 

Features:

• Sheave Ø (mm): 40 mm
• Sheave Ø (in): 1-9/16 in
• Maximum line Ø (mm): 10 mm
• Maximum line Ø (in): 3/8 in
• Maximum working load (kg): 220 kg
• Maximum working load (lb): 485 lb

40mm Carbo Block with Spring & Eyestrap

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. 

Features:

• Sheave Ø (mm): 40 mm
• Sheave Ø (in): 1-9/16 in
• Maximum line Ø (mm): 10 mm
• Maximum line Ø (in): 3/8 in
• Maximum working load (kg): 220 kg
• Maximum working load (lb): 485 lb

40mm Carbo Single Fixed Block

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. 

Features:

• Sheave Ø (mm): 40 mm
• Sheave Ø (in): 1-9/16 in
• Maximum line Ø (mm): 10 mm
• Maximum line Ø (in): 3/8 in
• Maximum working load (kg): 220 kg
• Maximum working load (lb): 485 lb

40mm Carbo Single Ratchet Block with Swivel

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. 2608, 2609, and 2614 have on/off switches. 

Features:

• Sheave Ø (mm): 40 mm
• Sheave Ø (in): 1-9/16 in
• Maximum line Ø (mm): 10 mm
• Maximum line Ø (in): 3/8 in
• Maximum working load (kg): 136 kg
• Maximum working load (lb): 300 lb

40mm Carbo Single Ratchet Block with Swivel & Becket

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. 2608, 2609, and 2614 have on/off switches. 

Features:

• Sheave Ø (mm): 40 mm
• Sheave Ø (in): 1-9/16 in
• Maximum line Ø (mm): 10 mm
• Maximum line Ø (in): 3/8 in
• Maximum working load (kg): 136 kg
• Maximum working load (lb): 300 lb

40mm Carbo Single Ratchet Block with Swivel Becket & Cam Cleat

Carbo Ratchets allow sailors to hand-hold loaded lines and offer balance between holding power and controlled easing. 

Features:

• Sheave Ø (mm): 40 mm
• Sheave Ø (in): 1-9/16 in
• Maximum line Ø (mm): 6 mm
• Maximum line Ø (in): 1/4 in
• Maximum working load (kg): 68 kg
• Maximum working load (lb): 150 lb

40mm Pivoting Lead Block - Carbo-Cam® Cleat

High-strength pivoting lead blocks with cams are used for halyard controls on larger keelboats and as “headknockers” on dinghies and beachcats for sheeting directly from the boom. Hole spacing and rivet size are the same as Classic models, making upgrades easy. Cam reverses for either up or down cleating.

Can be used as becket block.

Specifications:

• Sheave Ø (mm)40 mm
• Sheave Ø (in)1 9/16 in
• Maximum line Ø (mm)10 mm
• Maximum line Ø (in)3/8 in
• Maximum working load (kg)91 kg
• Maximum working load (lb)200 lb

40mm/29mm Carbo Traveler Block

Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. 

Features:

• Sheave Ø (mm): 40 mm
• Sheave Ø (in): 1-9/16 in
• Maximum line Ø (mm): 8 mm
• Maximum line Ø (in): 5/16 in
• Maximum working load (kg): 150 kg
• Maximum working load (lb): 330 lb

45mm Double Element Block with Swivel

Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Element’s design pairs the minimum amount of metal required to protect the sheave with a proven journal bearing. So size for size, Element is priced significantly lower, than our previously least expensive blocks.

Sideplates are hardcoat-anodized to resist corrosion. A tough composite bearing sheave resists corrosion for a long service life.

Specifications:

• Sheave: 45mm / 1-3/4in
• Length: 108mm / 4-1/4in
• Weight: 180g / 6.3oz
• Shackle pin: 6mm / 1/4in
• Maximum line: 12mm / 1/2in
• Maximum working load: 875kg / 1929lb
• Breaking load: 1750kg / 3858lb