1With strong magnetism, which is more practical to use, it can be firmly fixed to the screwdriver. 2Made of material, impact resistant, good toughness, high hardness, rustproof and durable. 3Screwdriver bits bring professional, fast and convenient working efficiency, good workmanship, high accuracy. 4Stable performance, it can be locked accurately without damaging the screw and screwdriver bit. 5Wide application, suitable for electric screwdrivers, hand screwdrivers, electric drills, pneumatic drills, etc. Item Type: Screwdriver Bits Material: 9CrSi Color: Sand Silver Color Size: Approx. 6.5x0.7cm / 2.6x0.3in Weight: Approx.147g-149g/5.2oz-5.3oz Application: Screwdriver, electric drill, etc } 10 x Screwdriver Bits1. Please allow 12in error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Note: 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.