Shockwave, 10 Piece, Torx Security Insert Bit Set, Custom Machined Tip Prevents Stripping & Reduces Wobble, Optimized Shock Zone, Optimized Shock Z1 Geometry Absorbs Peak Torque & Prevents Breaking, Custom Alloy 76 Steel Maximizes Resistance To Wear & Shock, For Use With Torx Security Screws, Set Consists Of: T9, T8, T7, T40, T30, T25, T20, T15 & T10 Security Insert Bits.