High quality and practical toolkit; Chrome-vanadium steel tool bit the tool bit and slot with relative specifications convenient for storing and searching; Can be used for 99% of cellphones Notebook PC precision equipment and other devices disassembly etc. The precision screw drivers toolkit is perfect for electronics DIY. The toolkit includes rubberized handle sleeves and 43 PCS precision screw drivers. This precision toolkit almost includes all the screw models of the electronics. With one toolkit you can loosen and fasten almost all kinds of screws. - Protective and organized carrying box - Comes with the following parts: Rubberized handle; sleeves: M2.5/M3.0/M3.5/M4.0/M4.5/M5.0/M5.5; Torx: T4/T5/T6/T7/T8/T10/T15/T20; PH00/PH0/PH1/PH2; Flat 1.3/1.5/2.0/3.0/4.0; Hexagon H1.0/H1.5/H2.0/H2.5/H3.0/H3.5/H4.0 Star 1.5/2.0; Y1.5/2.0; Triangular 2.0/2.3; PZ0; Pointed 1.0; 2.3; PZ1