This EAB Security Torx Impact Driver Bit Clip includes 10 different-sized bits specially designed for your impact driver. Made of heat-treated S2 spring steel, this bit clip has hardened tips for improved strength and durability. Treated with a milled finish for a better fit, these impact driver bits also feature reduced, rounded shanks for improved balance and less vibration while you work. Torque tested to ensure a higher breaking point. Recyclable for a better environmental footprint. This bit clip includes bit sizes TT7, TT8, TT9, TT10, TT15, TT20, TT25, TT27, TT30 and TT40.