5 In 1 Mobile Phone Watch Glasses Disassembly Tool Set With Screwdriver, Notebook Repair Tools Repair Accessory Note: Open The Cap At The Top To Take Out 5 S2 Batch Heads. Screwdriver Installation Steps: 1. Pull Off The Tail Cap And Pour Out The Batch Head. 2. Remove The Chuck Counterclockwise. 3. Put The Batch Head Back Into The Chuck Slot. 4. Rotate Clockwise To Tighten The Chuck., Tools For Men