HydraulicFloor JacksFeature a 1-pc. lift arm with dual leveling mechanism and reinforced flanged side frames. Twist gear mechanism gives metered control. 11N148 and 11N155 operate on 90 psi and use a manual pump when an air supply is unavailable. Long reach and low profile accommodates a wide variety of vehicles. 3-position T-handle houses the air connection and release valve for operation. Rugged jack has heavy-duty frame and side rails. Large, heavy-duty steel casters for greater maneuverability. Internally protected from over-pumping and overloading. Foot pedal or jack handle pumping.Service Jack, Air Over Hydraulic, Steel, Lifting Capacity 20 Tons, Low Pick Up Height 9 1/2 In., High Lifting Point 20 In., Power Raise 5 In., Chassis Length 20 1/2 In., Handle Length 52 1/2 In., Handle, Industrial Grade Caster, Caster Wheel Dia. 8 In., Saddle HTG 9 1/2 In.) Lowere, Saddle HTG 20 In.) Raise, ASME/ANSI-PALD Standard