THE WA1088 NO MAR RIM ADAPTOR MAKES IT EASY TO USE A MAGNETIC GAUGE ON THOSE WHEELS THAT HAVE DIFFICULT TO GET AT WHEEL HUBS.  IT DOES NOT MAR MAGS, ALUMINUM OR CUSTOM WHEELS.  THE ADAPTOR IS ATTACHED ON THE OUTSIDE OF THE WHEEL FELLOE SO NO DAMAGE IS DONE TO THE WHEEL.  IT IS SIMPLE, QUICK AND EASY TO USE.  THE ADAPTOR IS AN INEXPENSIVE TOOL NEEDED BY ALL WHEEL ALIGNMENT TECHNICIANS.