Allstar chassis dollies allow a car or chassis to be moved around the shop easily and safely. Each dolly measures 30" across the top with a single wheel brake to help prevent rolling and high density rubber pads. Dollies adjust from 13" to 19" high with a removable 1" block on one side for use on sprint cars with a raised rail chassis. Stands also collapse flat for storage in shop or trailer. Dollies are rated up to 2000 lbs. per set and sold as a pair.