8mm 1/4'' Tungsten Carbide Rotary Point Burr Die Grinder Shank Drill Bits Sets

Description 1. Suitable for electric or pneumatic tool drive (can also be used for machine tools), electric or pneumatic tool speed is usually 6000-50000 revolutions per minute, suitable for cast iron, cutting, engraving, cast steel, carbon steel, alloy steel, stainless steel and other materials deburring and polishing. 2.Rotary cutter kit can replace small impeller wheel. Its service life is 10 times that of ordinary HSS cutters and 200 times that of small impeller wheels. 3.Dual cutting method has two rows of cross-direction cutting teeth for fast material removal and rougher surface finish. 4. They both have hardened steel shanks that provide rigidity and strength. This prevents bending and reduces vibration, thus increasing tool life. .

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