Descriptions: These screwdriver bits are made of high quality S2 material which is durable, anti-impact and tough. Magnetic ball enables them to fix on screwdrivers firmly. They are widely used in electric screwdrivers, hand screwdrivers, electric drills, air drills and so forth. So practical item, make your life easier. Features: Strong magnetic, can suck the screws easily when used it. Exquisite workmanship, each edge can be accurately locked screws, no damage to the screw, and the screwdriver head. There are 7 different sizes/set .so is convenient to you, can meet your varied requirements. With 1/4 in hex shaft, they are widely used on electric screwdrivers, hand screwdrivers, electric drills, etc. Adopted of high quality S2 alloy steel, which is anti-impact and tough, great wear resistant. Specifications: Material: S2, surface sandblasting Size: H2, H2.5, H3, H4, H5, H6, H8 Length: 65 mm/2.55inch Package Included: 1 x H2 Magnetic Ball Screwdriver Bit 1 x H2.5 Magnetic Ball Screwdriver Bit 1 x H3 Magnetic Ball Screwdriver Bit 1 x H4 Magnetic Ball Screwdriver Bit 1 x H5 Magnetic Ball Screwdriver Bit 1 x H6 Magnetic Ball Screwdriver Bit 1 x H8 Magnetic Ball Screwdriver Bit