Hexagonal Screw Drill Bits Thermostat Covers with Lock DIY 2 Sets Electric Punch Hole Aluminum -piece

Description This is a professional 13-PCS drill bit set. It includes drill bits with tip diameters of 1.5mm 2mm 2.5mm 3mm 3.2mm 3.5mm 4mm 4.5mm 4.8mm 5mm 5.5mm 6mm 6.5mm each size comes with one piece. Industrial grade high-speed steel for higher durability and sturdiness. Suitable for drilling in tough material including aluminium cast iron brass copper magnesium alloy plastics etc. for DIY home and general building/engineering use. Feature - Color: Assorted Color - Material: Tungsten steel - Size: 11x0.5x0.5cm - diameter (mm) : 6.35 - Angle of outer (°) : 135 - Bit diameter: 1.5mm 2mm 2.5mm 3mm 3.2mm 3.5mm 4mm 4.5mm 4.8mm 5mm 5.5mm 6mm 6.5mm - High-speed steel with tungsten coating treatment tougher and more abrasion resistant for longer working life and high work efficiency. - Hex design drill bits accurate and fine increase drilling speed. - 13 sizes of tip: 1.5mm 2mm 2.5mm 3mm 3.2mm 3.5mm 4mm 4.5mm 4.8mm 5mm 5.5mm 6mm 6.5mm 1 piece of each size totally 13pcs. - Mainly for drilling wood plastic fiberglass printed circuit board and metal including copper aluminum tool steel cast iron and heavy-duty abrasive alloy metal etc. - for home DIY building and engineering use etc.