Harken 57mm Quad Block-Swivel

Murrays Part# 28-2631

57mm Carbo Blocks have an enormous working range and a very high strength-to-weight ratio.

Use with #28-2632 base block for an 8:1 Carbo low-profile mainsheet system.

Specifications:

• 2380 lb. SWL
• 5000 lb. breaking strength
• 7/16" maximum line diameter
• 6mm shackle pin diameter

Harken Part# 2631