1. PRECISION SCREWDRIVER SET:The screwdriver sets includes 150 interchangeable precision bits and assorted tools for all screw shapes and sizes, allowing professional of most precision products. 2. MAGNETIC SCREWDRIVER SET:The magnetic head of the screwdriver is very convenient for removing screws or aligning them with the cavity. This micro screwdrivers set have added a magnetic device to strengthen or weaken the magnetic head of the organiser to meet different magnetic maintenance needs, which greatly improves performance and saves time. 3. MATERIALS:This glasses kit with screws and screwdriver are made of quality CRV steel with a hardness of 60 HRC, wearresistant and durable, and can be used safely. 4. LARGE RANGE OF APPLICATIONS:This 150 in1 laptop screwdriver set can be used for precision work on most products, such as: mobile phones, computers, cameras, watches, games consoles, glasses, etc. It's suitable for professional or amateur repairers.