Compatible with all sport/diver (Part #s 19802, 19804) and the bass boat ladder (model # 19812) mounting hardware. Made of anodized extruded aluminum, the hinge features a breakaway pivot lock that shears a nylon bolt allowing the ladder to ride on the top of the water. A replacement nylon bolt is included. 3.25" W X 4.6" H X 1.75" D.