Features:Shank Size: 1/4inch;Total Length: 25mm / 0.98inch;Bit Type: T25;Finish: Heat-treated;Material: S2Package Content: 12 x Torx Screwdriver Bit Description: These Screwdriver Bits are with magnetic design. Easy to install on the screwdriver handle of the bit shank. Great replacement for missing, bent or broken torx screwdriver bits. Superior Quality: Those Screwdriver Bits are made of S2 alloy steel, which is a commonly used material in hardware with high hardness. Ideal Magnetic Screwdriver - Those bits fit for electric screwdrivers, hand screwdrivers, electric drills, air drills and so forth Suitable for charging electric drill, air batches and 1/4 (6.35mm) screwdriver sets. Surface bright chrome treatment, strong rust resistance, S2 alloy steel manufacturing.