The HW93660 Hein-Werner Automotive 10-Ton Manual Hydraulic Service Jack Lifts trucks, trailers, and buses by the axle, differential, or frame. The dual piston action provides speed to contact and power to lift. Long chassis for hard to reach points. Breather plug assembly, U.S. Patent No.7,194,857. Handle adjusts to three pumping positions. T-handle with release knob for exact positioning of load. Sealed hydraulic unit keeps out grit, grime, and moisture. Large full swivel saddle and ball bearing caster make positioning easy. Cast lift arm for heavy loads. Paired perfect with jack stands HW93512