I need a clip to attach my dinghy to a mooring buoy. It's exposed to salt water 24/7 and needs to be very secure during the strongest winds we get here (50-60 kts). I want it to be self-locking, and easy to unlock with one hand. This clip does it all superbly and is well worth the money spent.Believe me; I've tried other products. This clip is by far the best quality. Not a speck of rust after 5 months in salt water. The locking mechanism can NOT release without some human intervention. I've had other "self-locking" clips start to rust within weeks, or become unlocked just by being slapped around on the mooring ring; the result is a dinghy on the beach, in several parts, and I had to buy a new dinghy.Anyway, this clip is fantastic. Think of it as insurance.