Descriptions: Those Torx Screwdriver Bits are made of S2 alloy steel which is a commonly used material in hardware with high hardness. Magnetic bits are firmly fixed on screwdrivers. 12 sizes a set at an inexpensive price can meet your requirements. Features: Those bits, magnetic that can be firmly fixed on screwdrivers, fit for electric screwdrivers, hand screwdrivers, electric drills, air drills and so forth. All torx bits have a centre bore except the size of T5 and T6. Notes: Please allow a bit manual measuring errors. Specifications: Type of head: Torx; Type of shank: 6.25mm / 1/4 inch hex; Size: T5, T6, T7, T8, T9, T10, T15, T20, T25, T27, T30, T40; Overall length.: 50mm / 2 inch; Net weight: (approx.) 124g; Package included: 1 x 50*T5 Torx Screwdriver Bit; 1 x 50*T6 Torx Screwdriver Bit; 1 x 50*T7 Torx Screwdriver Bit; 1 x 50*T8 Torx Screwdriver Bit; 1 x 50*T9 Torx Screwdriver Bit; 1 x 50*T10 Torx Screwdriver Bit; 1 x 50*T15 Torx Screwdriver Bit; 1 x 50*T20 Torx Screwdriver Bit; 1 x 50*T25 Torx Screwdriver Bit; 1 x 50*T27 Torx Screwdriver Bit; 1 x 50*T30 Torx Screwdriver Bit; 1 x 50*T40 Torx Screwdriver Bit.