Molded from a slippery plastic composite to minimize friction when launching and loading your boat. * Stainless mounting screws included. * Kit 2 includes 4 pads (3" wide x 10" long) and 2 bunk enders * Recommended for metal boats weighing up to 4000 lbs and fiberglass boats weighing up to 1500 lbs. * Not recommended for boats with painted bottoms, or fiberglass boats weighing more than 1500 lbs.