This Harken Stand-Up Swivel Base is designed to keep blocks upright so they can work effectively and move freely while sailing.
The ball-joint design allows the block to tilt up to 45 degrees while rotating freely, even when under load.
A practical solution for deck hardware where correct block positioning, free rotation, and reliable function are important for trimming and line handling.
Key FeaturesKeeps blocks upright
Allows the block to rotate freely
Functions even under load
Ball joint allows for tilting up to 45 degrees
For use with a wide range of blocks
