The double-ended bit load includes Philips 0,1, 2, 3; Square 0, 1, 2, 3; Flat 4, 6; Torx 10, 15, 20, 25. Shaft serves as a 1/4" Hex Nut Driver. Retractable cartridge and Palm-Saver Technology.The EZ Guide collar helps maintain full contact between the bit and the screw for easier screw driving. The Shaft is made of 12T14 alloy steel while the handle is made from engineered Triax 1120 resin, an ABS-Nylon alloy. Made in USA and lifetime warranty.