8 pcs T8-T40 Magnetic Torx Head Screw Driver Bit Set Security Tamper Proof Star 6 Point Screwdriver Kit Tools | 150mm Length

8 in 1 Multi-Size: T8, T10, T15, T20, T25, T27, T30, T40 Suitable for industrial use and with manual electric screwdriver, screwdriver, drill, air and other tools. All security bits are made to last with S2 Steel construction Strong magnetic can be accurately locked screws, no damage to the screw and the screwdriver head. Made of S2 alloy steel which is anti-impact, tough and great wear resistant. Widely used on electric screwdrivers, hand screwdrivers, cordless drills, electric drills, air drills, etc. PRECISION MACHINED BITS: Each piece in this screw bit set is an extra-long bit set is finely crafted and precisely machined for accurate size. The chamfered bit ends insert smoothly into fasteners and protect both the bits and the fasteners from damaged edges.