Features: 【Anti Slip Screw Extractor】Striped for Head has anti slip function.It can remove all common sizes of damaged or peeled screws. 【Strong Magnetic Head】The screwdriver bits has strong magnetism, it can catch the screw easily and quickly, and fix it to prevent the drill bit from slipping and improve the work efficiency. 【High Quality Material】These screwdriver bits are made of high quality S2 material, adopt advanced alloy steel, inductive hardening; It has strong wear resistance, anti-impact, for tough and durable 【Easy To Carry】Light weight, small size and compact design. You can take it with you and use it for home, telecommunications, car or mechanical maintenance work. 【Wide Compatibility】Suitable for different sizes and all kinds of broken bits. Universal chuck that suitable for most electric hand drills. Remove broken screws or drill holes in one step. Specifications: Material: Chromium Vanadium Alloy Steel Size: 50/65/70/90/127/150mm 1.97/2.56/2.76/3.54/5/5.91inch Color: Refer to the Picture Package Includes: 1 Set Magnetic Screwdriver Bits note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you place order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!