Features: Hexagonal head drill bit set selected from carbon steel bit, hardened to reduce wear outs. Ensures their durability. White print on drill bit for faster recognition. Can be used with electric screwdriver, hand screwdriver, electric drills, combination general purpose tool and any standard drill. Usually used for mechanical equipment, automobiles, motorcycles, furniture, electronic equipment,etc. These drill Bit are not only efficient but also easily organized, making them for precise and efficient work in any setting. Specifications: Component:Carbon Steel Specifications:1.5-2-2.5-3-3.5-4-5-6-7-8mm Length:Approx.10cm/3.93inch Package Includes: 10Pcs Drill Bit note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.