Flat bottom heavy duty long ram jack used for farm applications but primarily for OEM applications in the manufacturing of engine cranes and handling equipment requiring long hydraulic stroke. Ductile iron base for added strength. Electrostatic paint for rust prevention. Larger ram diameters to withstand side loads. Long release valve handle eliminates the need for the pump handle to turn it. Hydraulic bypass system prevents over extension of ram. Flat base can be converted to a pivot base by using the model 5085 pivot base adapter sold separately. Lifetime warranty does not cover abuse.