Lightning hydraulic lift system quickly raises the saddle in one pump to load and the vehicle to desired lift height. 20.5" max lift height provides versatility needed to lift most cars, SUV's and pick-up trucks Heavy gauge steel frame with upper and lower flanges withstand twisting of the jack when under loadPremium quality, seals, and O-rings provide extended jack lifeBall-bearing rear mounted swivel casters for easy maneuverabilityEquipped with safety bypass valve to prevent overloading Jack is equipped with a rubber saddle pad and foam handle bumper to protect the vehicle.Minimum Height: 4.1"Maximum Height: 20.5"Quick Lift Feature: Lightning Lift - Single Piston One Pump To LoadChassis Length (in.): 28"Chassis Width (in.): 15.4"Handle Length (in.): 50"Saddle Size: 4.7"Includes Rubber Saddle Pad: YesHydraulic Return Spring: YesHandle Return Spring: YesDuty Level: Super DutyCertification: ASME/PASE 2019