The Triplett TPAL-X autoloading screwdriver is perfect for the professional or do-it-yourselfer and features an 18-tooth ratchet driver with forward, reverse and lock. It comes with 12 commonly used bits preloaded in two quick-change barrels (6 bits each): Standard: 1/8", 5/32", 3/16"; Phillips: PH1, PH2, PH3; Hex: H3, H4, H5 and Torx: T10, T15, T20. The custom-designed Bit Viewer lets you select the right bit instantly from the quick-change barrel. In addition, the TPAL-X works with Triplett's TSBK-001 Security Bit-Kit set (30 bits for tamper proof fasteners) so you can make sure you always have your most-needed bits ready. Lifetime warranty on mechanism; 1 year on bits.