BULLDOG brand has been the choice of military and manufacturers everywhere. For all heavy-duty towing needs, BULLDOG is sure to deliver. The BULLDOG line is characterized by unmatched strength, reliability, safety and value, count on BULLDOG to be Tough and Tested. Gooseneck hitches, gooseneck couplers, jacks, trailer couplers and Wedge-Latch elements feature a high-strength, heavy-duty design that makes them the toughest trailer components available today.• Operation Type: Electric• Capacity: 4000 Pound• Maximum Lift: 17 Inch• Mounting Type: Bolt-On• Type: Round Topwind• Number Of Wheels: Without Wheel• Color/ Finish: Black Painted• Swivel: No• Retracted Height: 17-1/2 Inch• Extended Height: 34-1/2 Inch• Clearance: 24 Inch• Material: Steel• Works In Case Of Power Loss With Emergency Manual Override Capability, Easily Accessible From The Top, Comes With Crank• 4000 Pounds Lift Capacity Lasts For Years With Industry-Leading BULLDOG Performance, Known Worldwide For Unmatched Strength, Durability, & Side Load Capacity Retains Like-New Appearance With Corrosion-Resistant Surfaces Integrated Gearbox & Motor | Bulldog Trailer Tongue Jack, A-Frame Powered Drive Jack in Black