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Special Single Groove CNC Milling Bits Shank Diameter: 3.175mm Cutting Diameter: 3.175mm Cutting Length: 22mm Total Length: 45mm Material: Tungsten Steel Please choose a cutting length that exceeds the board by 2-5mm or it will cause the final cutter to break. High processing efficiency spiral router bits with a large chip removal groove which effectively reduce cutting resistance, convenient for chip removal, end with clean edge on top and bottom, non-stick with spiral cutters, make the workpiece smoother and brighter, greatly improve processing efficiency DLC coating (diamond-like carbon), 3.175 mm shank, CNC aluminum milling cutter offers the advantages of ultra-high hardness, low friction coefficient, high-temperature resistance, good electrical insulation, chemical barrier, high thermal conductivity, ultra-high anti-jamming, and a lifespan 2.5 times longer than uncoated cutters Tungsten carbide CNC bits are widely used for engraving aluminum, aluminum composite panel, aluminum alloy door and window profiles, brass and so on, suitable for all kinds of machines for fast engraving. 3.175mm carbide cutters are perfect for CNC data machines, milling machine, drill. CNC 1 groove cutters are made of solid tungsten steel with micro-particles and are processed with high precision, they are integrally molded with high hardness, good wear resistance, not easy to break, also have high processing accuracy and long service life. The handle of the tungsten carbide front cutter is non-slip, making it more stable. Perfect and essential gift for DIY enthusiasts and metal workers. Easy to use, it will make your life easier.