7422W20-Ton Heavy-Duty Hydraulic Air-Actuated Bottle JackFeatures: Welded hydraulic pump and cylinder assures strength and eliminates leaksChrome plated pump piston and ram for additional rust resistance and durabilityExtension screw provides height adjustment for maximum heightBoth manual and pneumatic for automotive applicationsMeets ANSI/AMSE PALD and CE/GS standards Specifications: Capacity (Ton): 20Minimum Height: 9.65"Maximum Height: 18.70"Extension Screw: 3.15"Air Pressure: 100-145 psiBase Length: 8.66"Base Width: 6.89Weight: 40.000 lbs.