Suspension Pro 81199 Power Jack - 2500 lb. Capacity Full 18 inch stroke; travel speed 54 seconds; UV resistant cover; Water-resistant; Weather protected switches; 3 multi-bulb work lights Durable powder coat finish; Hardened steel gears; Stainless steel fasteners; 3/4 inch high-strength drive screw; 12V operation; Self-lubricating drive nut Internal automatic thermal protection; Resettable circuit breaker; Soldered electrical connections 2-1/4 inch jack diameter; Adjustable drop-down leg increases length by 6 inch; 18 A current draw at full load Accessories include an in-line circuit breaker, star washers and an emergency crank handle; Acme Screw 2 inch Outer Tube Diameter