Davis Instruments Wheel-a-Weigh Launching Wheels Wheel-a-Weigh launching wheels help you get your small craft to and from the water quickly and conveniently Removal of the two lower lockpins allows the wheels to be pivoted and locked in an upright position while underway. Fully pneumatic tires and weight capacity of 300 lbs (136 KG) Removal of all four pins releases the entire wheel assembly