Product description

Harken 57mm Carbo Double Block with Swivel

57mm Carbo Blocks

The high-load 57 mm Carbo has a broad working range. Use for main and jib sheets on centerboard and keelboats like Lightnings, Dragons, Solings, and J/24s, and for mainsheet systems on catamarans.

Blocks feature Cam-Lock or U-Lock locking systems to lock the shackle in front or side positions, or swivel to keep line from twisting.

Use for:

• Main/jib sheets
• Mainsheet fine-tune
• Control lines
• Vangs
• Cunninghams
• Outhauls

Specifications:

• Sheave Ø 57 mm
• Sheave Ø 2 1/4 in
• Length 121 mm
• Length 4-3/4 in
• Weight 178 g
• Weight 6.3 oz
• Shackle pin Ø 6 mm
• Shackle pin Ø 1/4 in
• Maximum line Ø 10 mm
• Maximum line Ø 3/8 in
• Maximum working load 720 kg
• Maximum working load 1584 lb
• Breaking load 1500 kg
• Breaking load 3300 lb