Saburr Tooth burrs from America are a revelation in sculpting, shaping or smoothing wood, fibreglass, rubber, foam or silicone. They are very durable, aggressive but controllable and resistant to clogging. 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. They are available in many shapes, sizes and grades to suit your carving, grinding, cutting and machining needs. Recommended operating speed 4,000 to 24,000rpm. For safety, always use approved eye protection and recommended safety devices. Please note: not suitable for use on metals or ceramics.