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Finger Grip Bit Micro-grain Carbide Tips TCT Router Bit For Woodworking LC8001 Quick detail:(for router bits) 1. Tungsten carbide tips hardness HRA91.5-HRA92.5 2. 45# carbon steel body with heat treatment. Avoid breaking. 3. Brazed high frequency induction brazing makes sure the strength of the teeth to prevent carbide breakage. 4. Special cutting angle of tip and various profiles. Design for wood cutting. 5: High temperature painting process 6. Rough grinding and finished