Chain Stopper, Stainless Steel for 5/16 to 3/8 chain. Chain Stopper, Stainless Steel for 3/16" to 1/4" chain. These Chain Stoppers help prevent damage to the windlass and reduce the risk of accidental free fall of the anchor while under way. Chain Stoppers mount alone or inside most bow rollers and work with your anchor roller to take tension off your windlass.Constructed of corrosion resistant formed 304 stainless steel. Uses 5/16 FH fasteners.

Overall Length: 3-1/8"
Height: 2-7/16"
Inside width: 2-3/8"