The X-Jack is unique, practical and advanced in design. The X-Jack has a triple layer top with a hard core insert for added protection and stability. The two way inflation system uses either the exhaust or a portable air compressor which provides added control in determining, rate and extent of lift. Operates from 0 to 10 psi to reach maximum capacity! This complete kit includes X-Jack, Hose with Cone, Hose Extension, and Protection Pad.