Note:Only the lowest of the hole part is magnetic, the hex shank is NOT magnetic!!The magnetic isn't much enough more potent to carry the screw tightly Specifications:Shank: 1/4" hex shank (6)Length: 60mm,100mm,150mmColor:Black and SilverMaterial: Stainless SteelQuantity:1pcsProperties: interface has a locking mechanism, built-have magnetic, mechanically pop up batch head:Suitable for drill, screwdriver, batch head and other to transfer every kind of screwdriver bits, screwdriver head conversion uses magnetic, speedy brief release will drastically improve work performance magnetism, limit the screwdriver&;s function and adjustable Package Include:1 x Magnetic Screwdriver Bit Holder