2-stage design: 1st stage 100% air operated for speed; 2nd stage hydraulic for precise control Swivel casters for easy maneuverability Nylon Speed-Strap™ quickly and conveniently secures the load Heavy duty acme threaded screws provide greater bearing surface for easier tilt adjustments Specifications Type: High-lift, air/hydraulic Lifting capacity: 1,000lbs. (454kgs.) Front tilt capacity: 40° Rear tilt capacity: 20° Side tilt capacity: 10° Base size: 41" (1,041mm) Minimum height: 34.1/2" (876mm) Maximum height: 72" (1,829mm) Head: Yes Air pressure: 90psi to 160 psi Standards: ANSI-PALD