Wheels-Genuine Heatless-Reg Grit #9 Pk/50Mizzy Wheels Genuine Heatless Regular Grit #9 3 32 x 3 4 (2. 4 x 19 mm) Pk 50 Heatless Original Wheels (grey) are made of a silicone carbide abrasive to make a unique, non loading binder for rapid reduction through the final shaping of non precious, semi precious, precious alloys, porcelain, acrylic, denture teeth and natural dentition, without generating excessive heat. These wheels come in 15 different sizes and in regular grit. They also withstand