Atlas Platinum PTC500 Reverse Mount AdapterAtlas Platinum PTC500 Reverse Mount Adapter For Use With PTC500 Center Post Tire Changer The Atlas Platinum PTC500 Reverse Mount Adapter is for use with the Atlas Platinum PTC500 Center Post Tire Changer. Allows the mounting and demounting aftermarket wheels where the drop center is in the rear of the wheel. Cam style design allows adjustment of pins for fast set up. Includes (6) 70 mm x 2 3 4" pins, (6) 100 mm x 4" pins, and lug hole measuring