Harken Ball Bearing Swivel Mainsheet Cam Base (HK144)
Use cam swivel bases when leads must rotate to face the trimmer. Ball bearing swivel bases feature dual rows of Delrin ball bearings to ensure that they will swivel freely even under high loads.
The bases include a stop that prevents the base from swivelling completely and fouling lines. Bases include stand-up springs and a U-adaptor to accept a variety of appropriate blocks.
The 144 is the standard configuration with a tall arm. It is ideal for mounting in the cockpit or for use on larger keel boats and small offshore boats that use 3.00" (76mm) plastic blocks.
Line Min.: 3mm
Line Max.: 12mm
Fastener Spacing: 19mm
Use with 57mm/75mm/2.25"/3.00"/ratchets