High-quality materials The bits are made of S2 steel, they are heat-treated and with high hardness and can reach HRC60, the surface of the bits is sandblasted. Extra long magnetic bits The bits have been magnetized and the length has been increased to 100mm, which can make your work easier. Various types of screwdriver bits A total of 21 types of bits including 11 Torx bits, 4 Hex bits, 3 PH2 bits, 3 flat bits, each with a laser mark. You can easily distinguish them. Widely Used The 1.4 inch hex head is suitable for popular brands of electric screwdriver, manual screwdriver, electric drill and pneumatic drill. Quality and One Year Warranty If you have any problem or are not satisfied with the product, please feel free to contact us, you will get a new or a.