Description: Adopting high-quality materials, which it is durable and wear-resistant to use. The reason why it has strong practicability is that it can be used for a long time. Come with good shock absorption and no deformation performance, our product can be used for a long time. Design of the anti-skid groove for preventing skid. Made of chrome vanadium alloy steel, it is durable to use. The length of the product is about 2.5-15 cm. It is suitable for workerman. Item Name: Drill Bit Kit Material: Chrome Vanadium Alloy Steel Features: Anti-Rust, Firmly Fixed, Sharp Color: Blue Size Details: Drill Bit Length: 2.5cm-15cm/0.98''-5.91'' (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 7 x Drill Bit