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V Type TCT Router Bit With Slotting Cutter And Cove Box Bit For Woodworking Quick detail: 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 grinding by CNC