Aluminum alloy body. and portable: This small screwdriver set weighs only 90 grams and can be easily put into a package or bag. Very , comfortable to hold, practical mini tool set One-piece design: The pen shape hides the removable stem, and the ends of the bits are neatly stored. Just a click to access the drill bits. Multifunctional machine screwdriver set provides everything you need for precise repairs Fine tool kit drill bits made of S2 steel include: 22 drill bits are made of alloy S2 steel with a hardness of 60 HRC. 6 Torx (size T2, T3, T4, T5, T6, T8), 2 x Pentagon (P2, P5), 1 x Hexagon (H2.0), 1 x Y-shaped (Y0.6), 1 x U-shaped (2.6), 1 x Triangle (2.3), 1 x Pozidriv (2.5), 1 x Triple Point Triple Point One (G). 3) 360° free- lid: with magnetic screwdriver, easy to grip and loosen screws, compact and convenient to put in drawer, ready when you need it, Weight: 98.0 pounds, Manufacturer: IJSDNVJNDX