Use Harken cam swivel bases when leads must rotate to face the trimmer.
Ball bearing swivel bases feature 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 403 is fitted with a double cam for use in two-speed mainsheet systems.
Mainsheets, Jib sheets and Control lines.
Part Number: 403