The head of the screwdriver is subjected to high frequency quenching treatment,it has strong magnetic.The magnetic head can attract the screw easily. Made of chrome vanadium steel and rubber,Chrome vanadium steel with heat treatment, high hardness and good toughness and resistance,which has strong corrosion resistance,oxidation resistance and extremely comfortable hand feeling. Ideal for hard to reach awkward areas.Long screwdriver provides stable pressure for easier screwing.