Material: German Imported S2 high quality steel Edge:6.35mm. Length:75mm Size: 75mm*T6, 75mm*T7, 75mm*T8, 75mm*T9, 75mm*T10, 75mm*T15,75mm*T20, 75mm*T25, 75mm*T27, 75mm*T30, 75mm*T40. 1. Security torx bits set is made of S2 steel material for superior hardness which it's reaches 61RCH, Nickel plating finish for good anti-rust funcitons. It will not be rust and keep the gloss even if it exposed to the air for a long time, which is more stronger and durable than others. 2. 11 piece tamper proof torx bit set in the following size: T-6, T-7, T-8, T-9, T-10, T-15, T-20, T-25, T-27, T-30, T-40. 75mm/3'' length, can deep enough for difficult operations, meet daily needs. All torx bits are packed in bit holder organizer and blister packaging, for convenient to store and carry. 3. Strengthened magnetic torx bits helps you easy pick up screws. The magnetism doesn’t decay after multiple uses. 4. 1/4 inch quick release hex shank torx driver bits fit for electric screwdriver, hand screwdriver, electric drills & air drills. Ideal for working on vehicles, bicycles & furniture. Assembling or repairing your furniture in an easy way. 5. Tonsiki torx bit set widely used in home repairs, automobiles, woodworking and other screw driving applications. Package Included: 11 pcs 75mm Screwdriver Bar