2 Set 7pcs Hex Shank Torx Star 5 Point Bit Screwdriver T10-T40 Security Magnetic Tamper Proof Torx Head Screwdriver Bits 50mm Made of high strength S2 alloy steel, wear resistant, durable and long lasting. 14pcs Torx screwdriver bits (set of 2). Head type: Torx Star 5 Point. Shank type: 6.35mm (1/4") hex. 7 Sizes: T10, T15, T20, T25, T27, T30, T40. Total length: 1.97" (50mm). All torx bits can meet your different needs. Wide application: compatible with electric screwdrivers, hand screwdrivers, electric drills, air drills, and other power tools. Strong magnetic hex shank helps hold screws securely during use. Note: Do not use mismatched bit sizes with screws to avoid damage to the screw or bit. Note: Measurements are manually taken; please allow 1-3cm variation. Due to lighting and screen display differences, actual color may vary slightly from the image. Product received will prevail.