Features Drywall Screwdriver Bits Made of high-strength S2 alloy steel, these screwdriver bits are very durable,More professional and practical. Drywall Screwdriver Bits With 1/4inch hex shank, they are widely used on many power drills or cordless drills. Drywall Screwdriver Bits Using these screwdriver bits, drywall screw head will stretch and dimple the drywall skin, but not ruptured it. Screwdriver bits has strong magnetism and would attract screws and hold screws firmly,high strength, high cost performance. These screwdriver bits have a collar that acts as a stop, preventing the bit from following the screw head into the drywall--once the collar contacts the drywall skin, the bit cannot proceed any further. Specifications: Color: Red, Mixed Colors, Yellow, Green, Blue, Purple (Optional) Material: S2 steel Type: PH2(Cross) Magnetism: Yes Length: 65mm(2.56") Hex Shank: 6.35mm(1/4") Quantity: 5pcs Package Includes: 5 x Screwdriver Bits Package List