"Ergonomically designed handles with hollow rotating cap for ease of use and precise control. Blades manufactured from premium quality chrome vanadium/molybdenum steel for strength. Tips accurately machined for the ultimate screw fit.Contents: 6 double ended interchangeable bits - Slotted 1.5, 2, 3, 4mm; PH000, PH00, PH0, PH1; TX05, TX06, TX07, TX08."