Norco Professional Lifting Equipment - The 81035A Heavy Duty 1-1/2 Ton Capacity Under Hoist Stand is intended to assist in stabilizing and supporting a vehicle that is raised by an in-ground or above-ground lift, and should be used in pairs. It features an adjustment pin chained to the stand that secures the support column at 6 different height positions, a quick adjust spin handle with thrust bearing that eliminates wear and provides ease of turning under load, and a 1-1/4” diameter acme threaded screw that has 6-1/2” of travel for fine adjustment.