Magnetic Non-Slip Drill Bit Non-Slip Electric Screwdriver Bit Elastic Screw Tool Features: There are 7 Phillips screwdriver heads of the same specification to meet your use and replacement needs The electric screwdriver head is made of high-grade alloy steel, with overall induction quenching and strong wear resistance. Robust The Striped head has anti-skid function and can remove damaged or peeling screws of all common sizes. Suitable for general size and various crushing bits. The universal chuck is suitable for most electric hand drills. Remove the damaged screws or drilled holes in step Light weight, small volume and compact design. You can take it with you for home, telecommunications, automobile or mechanical maintenance Dimensions: 25x6.35mm, 50x6.35mm, 65x6.35mm, 70x6.35mm,90x6.35mm,170x6.35mm,150x6.35mm Package includes: 1 set of magnetic auger bits (7 pieces)