The end cover is made of S2 steel. It has been heat treated and has high hardness, which can reach HRC60. The surface of the end cover has been sandblasted. Extra long magnetic suction head The suction head is magnetized and the length is increased to 100mm, which makes your work easier Different types of screwdriver bits There are 21 types of drill bits, including 11 Torx bits, 4 hex bits, 3 PH2 bits, 3 slotted bits, each bit is laser marked. You can easily distinguish them Widely used 1-4 inch hex head, suitable for popular brands of electric screwdrivers, manual screwdrivers, electric drills and pneumatic drills