DescriptionThis handy screw driver kit consists of 30 interchangeable screw driver heads and a screw driver handle piece in a handy case to keep everything organised.SpecificationsOverall size w/ Cover (Dia.x H): 2 x 4.5 inchHandle length: 3.8 inchBits length: 1.1 inch / 2.8 cmMaterial: chrome alum steel bits and plastic handle and holderFeaturesSuitable for computer, telephone or other electronic products.Professional screwdrivers allow you to easily open the phone shell without damaging it.It can be used to open mobile phones, laptops, PSPs, hard disks, MP3 players, etc.The open kit can help you install, open a project, or repair a project.Safe and convenient to use, so that your items in good condition.