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.Able to open mobile phone, PDA housings, PSP, NDS, MP3 player, etc .The tool set kit has everything you need to change out any faceplate.Specification""-"" 1.0, 1.3,1.5,2.0,2.5,3.0,4.0""Y"" 3.0"" "" PH00, PH0, PH1, PH2""★"" 2.0""six rayed star"" T4, T5, T6, T7, T8, T10, T15,T20""●"" 1.0""*"" 3.0Hexagon: 1.0, 1.3, 1.5, 2.0, 2.5, 3.0, 4.0""I""2.6Includes:1 x 30 in 1 Screw Driver Set