Keystone Mizzy Heatless Wheels - #4 White 3-16" x 7-8" - Box of 50

Mizzy wheels are available in two types of wheels and will not generate excessive heat. They are designed to withstand a maximum of 20,000 rpm.

Silicone carbide wheels (grey) original grit - to make a unique, non-loading binder for rapid reduction through the final shaping. For use on non-precious, or precious alloys; porcelain, acrylic, denture teeth and natural dentition. Designed to withstand a maximum of 20,000 rpm.

Aluminum oxide wheels (white) - Non-contaminating, and designed for use with precious or semi-precious metals and porcelain. They cut fast, run true, wear evenly, and won't ever clog. .