12-Piece Impact Security Torx Bit Set (T5-T40), 3-Inch Long S2 Steel Tamper-Proo
It is a great helper for your efficient work. Full - Spec Set: Contains 12 Security bits (T5, TT6, TT7, TT8, TT9, TT10, TT15, TT20, TT25, TT27, TT30, TT40), and each torx bit has its size clearly marked.