K-Tool HD 22-Ton Capacity Air/Hydraulic Truck Jack, Simple Speed Control, Springless Design, Saddle Extension Screw Included, 3 Adapters, Jumbo 9 Inch Tires. Air lever activates controlled raising and lowering of the ram for percise speed control Jumbo 9" pneumatic tires for smooth operation on any floor. Fast rising, air vacume design power unit to raise and lower the ram quickly. 3 position handle lock designed with a lever on the handle that locks it in any of three different positions. 3 adapters provide multiple heights for specific applications with 0.8", 2.4" and 3.9" sizes.