Cast-stainless-steel 316 hinge leafs and knuckle with a superior fit Mirror-polish finish Friction washers provide consistent resistance and smooth operation Friction resistance from 0° to 90° Size: 3"L x 1.5"W Reduced installation costs as compared to gas shocks Each hinge will support 12”W x 20”L x .75”T high-density polyethylene lid or door Easily adapts to numerous applications Sold individually