4″ Full Cable Twist Knot Wheel – Carbon Steel. The Full Cable Twist Knot Wire Wheel is designed for general heavy duty cleaning of scale, surface oxidation, rubber flash, heavy burrs and weld splatter. Full Cable Twist Knot Wire Wheels are available in carbon and stainless steel. This Cable Knot Wire Wheel is designed for use with 4-1/2″ or 5″ Milwaukee and competitive Grinders with 5/8-11″ threaded spindles. Made of stainless steel.