The Ascot by Corghi Rim Clamp Tire Changer, No. 443-08630, from Ascot Supply, has an outside clamping range of 12" to 28" and an inside clamping range of 14" to 30", and it can accommodate a maximum rim width of 15" and maximum tire diameter of 49". The working pressure ranges from 115 to 145 psi. The changer uses a 110V power supply and is rated at 0.85kW with a rotation speed of 0 to 12 rpm and a rated torque of 885 ft-lbs.