The QSP Heavy Duty Alignment Stands, No. DB-20K, feature four spring-activated casters and four adjustable feet per stand. Each stand includes two wheel stops and has a 20,000-lb. capacity. The casters allow techncians to move the stands around the shop easily and to disengage when minimum weight is applied. A minimum of 750 lbs. is needed to compress the springs on the casters to ensure the stand is stable. The stands incorporate turnplates and are sold in pairs.