The Steck 4th Wheel Loader allows tow truck drivers to safely load and secure a vehicle with broken ball joints lost wheels, locked wheels or brakes, collision damage and control arm failures on their roll back wreckers. It also allows mechanics and body technicians to steer the vehicle into the shop and guide it to lifts or frame racks for repair. The 4th Wheel Loader is a tough 24â? x 14â? hardened aluminum fabricated platform with two 4â? x 1â? Polypropylene roller wheels, six 5/8â? holes for mini-J hooks for loading assistance and 1â? axles which provides a safe platform to easily hold and secure up to 5 tons while loading a vehicle with broken ball joints and/or a damaged wheel/tire on a rollback. For wheel failures like locked brakes or broken wheels simply lift the damaged vehicle and place the wheel in the large 1â? x1â? recessed pocket of the 4th Wheel Loader and chain the wheel assembly with our Load Binder with a t end to the locking slots on the Loader platform. Each 4th Wheel Loader com/16â? chain, hand adjustable screw type Load Binder and 3/8â? extension nut that will easily connect to the chain and Loader base unit by hand or wrench to secure the load and pull the car up on the rollback or allow the technician to steer the damaged vehicle into the shop. The Loader is 4â? high (without shim blocks) with a built-in 6â? X 1 Â?â? handle which will allow you to store the 25 lb. Loader behind your seat or toolbox. The 4th Wheel Loader comes one 1â? x 1â? x 3â? and one 1â? x 1â? x 1 1/2â? Polypropylene interlocking shim blocks, which fit into the recessed Loader pocket. The shims allow the driver to raise the vehicle with busted ball joints, lost wheels and severely bent axles and place it at the desired height for secure loading on the rollback. Simply insert the desired shim(s) in the pocket then lift the damaged vehicle and place the rotor, solid axle or control arm to the desired level on the shim block(s) placed in the 4th Wheel Loader pocket and chain to the locking slots on te: Shim design also has a 3â? slot cut out to allow the lower control arm to nestle securely on the shim. Replacement Parts: 71481 â?? Load Binder 71482 â?? 3 inch Shim 71483 â?? 1-1/2 inch Shim 71484 â?? 1 inch Black Roller (only) 71485 â?? Axle 71486 â?? 6 Foot Chain Re