Features:Brand new and high quality. Wallet type packing, light and portable. Internal type batch head bayonet fixed, not easy to scattered. The tail is designed with precision bearing, flexible and easy to use. The handle in the aviation alloy material manufacture, light and durable. With a compact and assorted package, it's very easy to carry everywhere. As professional hardware tools, it can provides you with the most powerful function. Full set of 24 batch head, complete specifications, can be adapted to work in many different fields. Suitable for most digital products, various types of computer, mobile phone, camera, glasses, watches. High precision screwdriver head, high-end steel (chrome vanadium steel) by special heat treatment, hardness can reach HRC52-60.