Adjust and tension dinghy rigging with the ease of a lever. C. Sherman Johnson shroud adjusters were designed for one design dinghies to make quick rig adjustments or to de-tension the rig for storage or to unstep the mast. 7 positions allow for micro adjustments to the rigging and the lever action will take up to 3 5/8". When the rig tension has been established, an included quick release locks it in place for a day or racing or pleasure sailing. Take the load off rigging or make quick adjustments to gain an edge using these quick release shroud adjusters. Key Features Allows quick tool-less rig adjustments De-tensions rigging for storage Ideal for one design dinghies Constructed of 316 stainless steel for strength and corrosion resistance Clevis pins secured with cotter rings Includes quick release locking pin