Description<br> This is a professional drill bit set. It includes drill bits with diameters of 2.5cm, 3.3cm, 4.3cm, 5.4cm, 6.8cm, 8.6cm, each size comes with 1 piece. Industrial grade high-speed steel for better durability and sturdiness. Suitable for drilling in tough material, including aluminium, cast iron, brass, copper, magnesium alloy, plastics, etc.<br> Feature<br> - Color: Yellow<br> - Material: Stainless steel<br> - Bit diameter: 2.5cm, 3.3cm, 4.3cm, 5.4cm, 6.8cm, 8.6cm; Length: 5.8cm<br> - High-speed steel with coating treatment, tougher and more abrasion resistant for longer working life and high work efficiency.<br> - design drill bits, accurate and fine, increase drilling speed.<br> - 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.<br> - for home DIY, building and engineering use etc.Package list: 6 x Drill Bit<br>Note: <br>1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. <br>2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you!<br>About Shipping: <br>1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly.<br>2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.<br>3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 265 hours, wish you a happy shopping!