DieHard DH20023 low profile jack has a 3 tons (6,000 lbs.) capacity with lifting range from 3.5 to 18.31 give you easy access of low profile vehicles. It is constructed with high strength steel for long term durability. Dual piston pumps for fast action. Built in with safety over load system prevents use beyond rated capacity and hydraulic oil by-pass system protects ram from being over-extended. Comes with full swivel casters for easy jack positioning. Product Features:Lifting Range: 3.75 to 18.31Dual pump raises vehicle 5 times faster than standard jacksLow-profile design for maximum access, which fits easily and safely under vehicleHeavy-duty all steel constructionOver pump bypass protectionFull swivel rear casters for easy positioning