XIAOMI | 16-In-1 Ratchet Screwdriver | BHR4779GLColor Black Number of bits 8 Thanks to the patented bit storage system in the handle, which is accessed by pressing the side buttons simultaneously, you 'll never lose the bits you need or have to search for them. The Xiaomi Mi 16 in 1 Ratchet Screwdriver (BHR4779GL) also comes with a 105mm extension cord for convenient work in hard to reach places. The extender is detachable so it doesn't take up much space and you can easily take it with you. 45