Saburr Tooth burrs from America are a revelation in sculpting, shaping or smoothing wood, fibreglass, rubber, foam or silicone. They are available in many shapes, sizes and grades to suit your carving, so we have put together a couple of sets of the most popular shapes to cover a wide variety of applications. Long lasting, razor-sharp carbide cutting teeth are arranged into a unique open pattern to resist "loading" while providing the "Power Carver" rapid stock removal and smoother finishes. Sets contain: 6.35mmø x 12.7mm Ball Nose, 6.35mmø x 12.7mm Flame, 6.35mmø Spherical and a 3.2mmø x 22mm Tapered. Recommended operating speed 4,000 to 24,000rpm. For safety, always use approved eye protection and recommended safety devices. N.B. not suitable for use on metals or ceramics.