The Weaver Wheels are made from stainless steel and roto-molded wheels that can hold up to 600 pounds for inflatable or hard-shell dinghies. The wheels are designed to go over rocks and sand. The wheel brackets will pivot away from the motor without the wheel being in your way. The upper and lower bracket has different mounting holes for transoms that have lips on them. The Weaver Wheel comes with all the hardware you need to mount the wheel on the dinghy.