Feature: Hinged Bow Rollers AISI304 -(15kg) -W: 70mm L: 500mm Made in stainless steel . Hinged with an inner roller for self launching operations. Apart from making it easier to drop and weigh your anchor, the pivoting dual-roller design of this anchor roller reduces friction for less strain on your windlass and/or yourself. It also helps to reduce chafe, prevents scratches and dings to your boats finish, and provides a secure place to store your anchor when used in conjunction with an optional chain stopper or tensioner. Compatible with Delta/DTX, Rocna,Danforth, Fortress, CQR plow style and Claw/Bruce style anchors.