Ball bearing swivel bases feature dual rows of Delrin® ball bearings that swivel freely even underhigh loads. 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 keelboats and small offshore boats that use 3.00 in (76 mm) plastic blocks.Delrin® is a registered trademark of E. I. du Pont de Nemours and Company or its affiliates.
DO NOT use Harken Equipment for Human suspension.
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