This is a YATO professional electronics toolkit, model YT-28015, with fifteen pieces. The set includes: a screwdriver handle, five screwdriver bits, two extension bars, five hex key wrenches, one universal joint and one magnetic bit holder with fifteen pieces of assorted screwdriver bits. The bits are color coded for identification and made of special steel for enhanced hardness and durability. The screwdriver handle is ergonomically designed for comfortable use. This set is perfect for use on computers, phones, electronics, automotive projects, and anytime you need precision, reliable tools for your home projects.