Lewmar Anchor LockThis Lewmar Anchor Lock is composed of polished stainless steel. It locks the chain or shackle in place using a quick release 1/4" diameter captive pin. With a corrosion prevention electro-polishing technique, you can quickly secure your anchor without having to stow it in the locker or tie it off with a rope. This anchor lock allows quick release of anchors on bow rollers of 20' - 50' boats.Features: Locks Chain Or Shackle In Place Using Quick Release 1/4" Diameter Captive Pin; Corrosion Prevention Using Electro-Polishing Technique; Polished Stainless Steel Channel Lock; Designed To Keep Anchor In Place While Underway; Quickly Secure Your Anchor Without Having To Stow It In The Locker Or Tie It Off With A Rope; Allows Quick Release Of Anchors On Bow Rollers Of 20' - 50' Boats; For Anchors Up To 55 lb; Chain Or Shackles Up To 3/8" In Diameter; Specifications: Dimensions: 4" L x 1-1/2" W x 1-1/2" H; 3 Year Warranty;