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Half Stright Bits Micro - Grain Solid Carbide CNC Carbide Bits For Cutting Wood, Laminate,artificial stone Description: Bits are made of micro-grain solid carbide, Produced by Walter CNC grinding machines. OEM and ODM are available Applications: For cutting PMMA lens,PMMA mobile phone lens and PC sheet. Specifications: Competitive Advantage: 1): Micro-grain carbide tips to make sure bits sharp and durable. 2): Cutting surface is finished, without burrs and skins char. 3):