Shockwave, 9 Piece, Security Insert Bit Set, Optimized Shock Z1 Geometry Absorbs Peak Torque & Prevents Breaking, Custom Machined Tip Prevents Stripping & Reduces Wobble, Custom Alloy 76 Steel Maximizes Resistance To Wear & Shock, For Use With Security Screws, Up To 30x Longer Life, Includes: (1) T20 Security Insert Bit, (2) T25 Security Insert Bits, (1) T30 Security Insert Bit, (1) 1/8" Hex Security Insert Bit, (1) 5/32" Hex Security Insert Bit, (1) Spanner #10 Insert Bit, (1) Clutch 5/32" Insert Bit, (1) Clutch 3/16" Insert Bit.