Variety & Versatility: Bailink 124PCS electronic screwdriver set includes 101 precision bits, complete with every driver head you'll need to repair any electronics, such as Apple & Android mobile phone, PC, laptop, iPhone, Mac, Nintendo, PlayStation 5/4/3, Xbox series game console & controller, tablet, iPad, RC toys, watch, eyeglass, etc. Superior in Quality: These 4mm precision bits are made of premium Chrome Vanadium Steel which hardness can reach 60HRC. The bits are precisely CNC machined to be accurate. And every bit is engraved part number and size for fast recognition. Precision Tool Kit: This computer tool kit offers maximum utility with 23 practical repair tools. Magnetizer Demagnetizer Tool helps magnetize bits to grab screws, or demagnetize it to safely work on sensitive electronic devices. Innovation Design: We have professionally designed this laptop screwdriver kit for maximum humanization, make your repair job easier and more efficient.