"This Blackhawk Automotive Service Jack requires minimal strokes to reach the lifting point for faster results and less fatigue. Lift Capacity tons 2 1/2, Safety Valve Yes, Max. Lift Height in. 20 1/4, Min. Lift Height in. 4, Dimensions L x W x H in. 29 3/8 x 14 7/8 x 7 1/4. Heavy-gauge construction with universal joint release valve Built-in bypass device protects hydraulic system from overpumping Metered release system allows for precise load control Rolled side frame adds strength and rigidity to reduce twisting"