The W-K Air-Up Series of pneumatic light and heavy duty rolling jacks can be customized to fit most hoist makes and models of lifts. Light duty lift models offer a range of lifting capacity from 6,000 lbs to 12,000 lbs. while heavy duty lift models provide a lifting capacity range of 15,000 lbs to 35,000 lbs. Air-Up Jacks fit to any pit, and over 700 four-post hoist rail styles. Use W-K air rolling jacks for light and midsize auto repair shops, heavy duty vehicle repairs, oil and lube retrofits, mass transit, trucking and any other hoist/pit applications.