11-Pieces Magnetic Screwdriver Set with Case Magnetizer Demagnetizer Flat HeadMade of premium materials Chromium molybdenum vanadium steel, which is stronger than most carbon steels; After chrome plating, it is corrosion resistant and beautiful. Strong magnetic head, it is easy to attract screws with magnetic head, and it is easy to take out screws after disassembly. Blackening treatment helps to effectively prevent rust. Ergonomic non slip and soft handle, made of PP + TPR, allows you to maintain effective use while providing