Material Chrome vanadium steel, alloy steel, tool steel head type hex About this project Various Drill BitsAll-in-one screwdriver set with 1 ABS screwdriver handle and 10 drill bits made of alloy steel. Adjustable DesignPrecision screwdriver with 5-level adjustable extension rod and built-in strong magnet can firmly hold the drill bit, the handle is non-slip and comfortable, can be long or short Easy to useThe powerful magnetic drill bracket and ratchet have the functions of pressure lock, counterclockwise, locking, clockwise, three-speed one-twist conversion, etc. It is easy to use and can be controlled at will. Easy to carryHidden magazine design, each has its own fixed bit, hidden in the handle, no need to change the screwdriver frequently. The drill bits are stored in the handle for easy portability and storage. Wide UseThe screwdriver set is complete in style and can be used for both personal and professional use, including repairing mobile phones, TVs, computers, watches, air conditioners, glasses, cameras, printers, home appliances and other electronic products.