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Two Flute Compression Graver With Micro - Grain Solid Carbide CNC Carbide Bits For Cutting Wood Description: Bits are made of micro-grain solid carbide, Produced by Walter CNC grinding machines. This series of tools are designed to improve the efficiency of processing. The edge is treated with unique mirror grinding technique. Together with high capacity of scrap-releasing groove, it is non-stick and causes little heat in proce3ssing, resulting in smooth processed surface.