Flex Keel Pad - Edge Cover Style - 10" x 1-1/2" - BlackThese black poly pads cushion the trailer cross members to protect your boat keel. Edge cover style mounts on the trailing edge of any width cross member or axle.Features:. Black poly material. 10" L x 1-1/2" W. 3/8" thick. 4-1/2" hole centers. Mount using two rivets or screws through the top (hardware not included).