SB20 Harken Mainsheet Ball Bearing Swivel Base

This Harken mainsheet swivel base features dual rows of Delrin ball bearings that swivel freely even under high loads.

Bases include stand-up springs and a U-adaptor to accept a variety of appropriate blocks.

The Harken 144 is the standard configuration with a tall arm. It is ideal for mounting in the cockpit or for use on larger keelboats and small offshore boats that use blocks that are 57mm or larger.

Please note: this product comes with a lead time which could be up to 10 working days.

Specifications

• Height - 146mm
• Weight - 369g
• Minimum line - 3mm
• Maximum line - 12mm
• Fastener spacing - 19mm
• Fasteners - 5 FHmm
• Use with 57mm/75mm/2.25"/3.00"/ratchet blocks