This chain stopper is an essential part of your anchoring equipment. It has a dual function. First, the stopper prevents the anchor from releasing unexpectedly while the boat is in use. Second, it prevents abnormal strain on the windlass while the boat is at anchor.
The chain stopper can be disengaged with a simple, single movement.
This part is well made made from 316 marine grade stainless steel, and comes in two sizes to suit different thickness anchor chains.
A nifty little part that makes for a safer sailing experience.