31-piece screwdriver bit set in green tower-style holder with rotating cap

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)