Specifications: Shank diameter: 6mm(1/4"), cutting edge diameter: 6mm(1/4"). Fits most rotary die grinders. Long Working Life: Made of heat-treated tungsten carbide that hardness can be up to above HRA85, sharp and sturdy, long service life. Double Cut Design: The groove lines are crossed. Double groove rotary files are more suitable for the object density is relatively low, such as wood, plastic, aluminum. With good milling and cutting performance, ensures high work efficiency.. Versatile Use: Widely used for metalwork, tool making, model engineering, wood carving, jewelry making,welding, chamfering, casting, deburring, grinding, sculpting. Tips: Requirement of the carbide burrs rotating speed is: 4000-50000 rpm. Always ensure your burrs shank is well inserted into your collet and clamped down tightly.
