【Premium S2 Alloy Steel with Strong Magnetization 】 Forged from heat-treated S2 alloy steel (HRC58-62) for superior wear/impact resistance. Precision-magnetized tips securely hold screws in place - ideal for overhead work or confined spaces. 【6" Extended Reach for Deep Access 】 6" (152mm) extended shaft accesses recessed fasteners in engine bays, appliances, and machinery. Magnetic retention prevents screw drops during precision work. 【Complete Tamper-Resistant Torx Range】15-piece set covers TT7-TT40 (including security pins) for automotive (brake systems, trim panels), electronics (consoles, laptops), and industrial maintenance. 【Universal 1/4" Hex Shank Compatibility】Compatible with all standard 1/4" hex drive power tools including impact drivers and drills. Ready to use straight out of the case - no adapters required. 【Professional Storage Case Included 】English: Heavy-duty case with individual slots protects bits from damage. Molded labels enable quick identification at job sites or workshops. 6" Magnetic S2 Steel Torx Bit Set - TT7-TT40, Tamper-Proof, Fits 1/4" Hex Drills, Hardened (HRC58-62), w/Case.