Name:Tungsten Carbide Rotary Tool Burr Material: Tungsten Steel Carbide Types: A - Cylindrical , C - Cylinder ball nose , D - Ball , E - Oval , F - Tree ball nose , G - Point Tree , H - Flame , L - Cone ball nose , M - Pointed cone , FX - Style(double threaded) Cutting edge diameter: 6mm , 8mm , 10mm , 12mm , 14mm , 16mm. Shank diameter: 6mm - 1/4''
eBay