This screwdriver head set is detachable and comes with a storage box. Each box contains 10 pieces of strong magnetic ten pin screwdriver heads 1/4 inch (6.35mm). The combination of screwdriver heads and magnetic screw rings is very suitable for home decoration woodworking, engineering construction, automotive maintenance, and electronic product assembly, providing great assistance. They are suitable for installing and disassembling various screws, especially in narrow places, ensuring efficient and precise operation. The screwdriver head magnetic ring is made of S2 chrome vanadium steel and heat-treated, with high strength, wear resistance, and impact resistance. The anti slip and shockproof drill bit has super strong magnetism, tightly holding the cross head screw to reduce slipping and is durable