Ideal for your telecommunication tools Exact fit precision machined tips Professional screwdrivers allow you to open cover of mobile phones easily and without damage to the phone cover Including 1 handle, 30 blades as follow: 9 Heads Torex T3, T4, T5, T6, T7, T8, T10, T15 (cell phone, PC, hard drive, printer, Xbox, Xbox 360, shaver) 8 Heads Hex .5, 2.0, 2.5, 3.0, 3.5,4.0 (model, bicycle, Engine, Guns) 7 Heads Straight 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0 (Most common Straight heads)