HEAVY DUTY – Shafts are made of CR-V steel and heat treated which brings the HRC to 562. The black blade is rust-proof and corrosion resistant. One-piece bar makes the driver extra robust. Magnetic Tip – Tighten s, allow one-handed, comfortable working. COMFORTABLE AND STURDY – Handles are made of PP + TPR for comfort and control. The sturdy end cap on another end can withstand hammer strikes and spanner turns. Multipurpose: Packed in a compact carry bag. Convenient for projects such as the installation of sockets and switches and automotive maintenance. Easy to identify – Sizes are printed on both the box and the screwdriver. Convenient ignment of sizes during and after use., Manufacturer: Rotation