7Pcs Efficient Universal Drilling Tool Multifunctional Cross Alloy Drill Bit Au

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Features: - HIGH-QUALITY MATERIALS - Efficient Universal Drilling Tool is made of high quality alloy as raw material. The process of oxynitriding of the cutter head strengthen the drill hardness. - 7 DIFFERENT SIZES - Suitable for your different needs.Efficient Universal Drilling Tool Can be installed in the general electric hand drill, bench drill. - The machine drill clamp range is 3/4/5/6/8/10/12mm. - SURFACE ELECTROPHORETIC PAINT PROCESS - Full-grinding and anti-rust treatment, clean and sharp without burrs .The drill bit is more wear-resistant and more durable .Fully automated polishing: Polished CNC is fully automated, each one is unified. - UNIQUE CROSS ANGLE DESIGN - Small incision resistance, feature drilling stably, fast speed, not breaking the border. Opening neat, smooth, no broken edges, no tremor phenomenon, chip easily. WIDE USAGE - Professional glass and tile drill bits provide smooth and accurate drilling in ceramic tiles, marble, thin iron plate, mirrors and glass. Remember to add Water or coolant when drilling. Description: - Material:Alloy - Size:3/4/5/6/8/10/12mm. -7 x Efficient Universal Drilling Tool(3+4+5+6+8+10+12mm) Notice: Actual color may be slightly different from the image due to different monitor and light effect Show more