EnPoint&trade; TiN Coating Tungsten Carbide Roughing End Mill w/Locator Ring 1/8" Shank 1mm Cut Dia 7mm Flute Length Corn Cutter CNC Threading Milling Bit for PCB PVC Carbon Fiber Hardwood Plastic Flute length: 7mm(0.276 inch) , Cutter diameter: 1mm(0.039 inch) Shank diameter: 3.175mm(0.125 inch) , Total length: 38mm(1.496 inch) Tungsten carbide made, more hardened and sharpened, resistance to high temperature and corrosion! Nano Grade TiN coating ensures its durable lifespan and the corn-shaped design can remove the sticky chips, which makes your jobs smooth and clean! The locator ring can help reduce your debugging time! Applicable to PCB, PVC, Plastics, Carbon Fiber, Hardwood, Plywood and other composite panels!