Made of chrome alum steel High quality precision telecommunication tools 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 Specification: 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) 4 Heads for NO.00,NO.0,NO.1.NO.2 1 Star:0.8mm(Especially for iPhone) Others please see the pictures. Weight: 145g Handle length: 10.2 cm Blade length: 2.8 cm Size of storage box: approx. 5.5 cm in diameter, 12 cm in height