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2 Flute Micro End Mill Micro Grain CNC Carbide Tools , Thread Milling Cutter Description 1 . Grain size carbon tungsten has high toughness, coating , high wear-resistance , special use for high speed cutting of CNC milling machine , also can increase the smoothness , reduce the rubbing coefficient and improve the lathe efficiency to save more production time 2 . .​Layers with high heat resistance , can be high-speed processing, good Surface finish , Increased feed rate. 3 .