High Quality: The precision mechanical screwdriver bits are made of high-precision chrome vanadium steel, which is wear-resistant, durable, lightweight and impact-resistant. They are not easily deformed or broken. Each precision mechanical tools is perfect and can open almost all tools. As you work, make you choose the correct screw size and screw type for your drill, as choosing the wrong bit can easily damage it. Precision Mechanical Screwdriver Set: This set contains up to 120 pieces, allowing you to professional repairs. The set includes the necessary tools and plenty of screwdrivers to help you with your DIY work. The set includes the main tool, the handle - the base of the screwdriver - and up to 98 bits in various sizes and shapes. Wide Application: The precision mechanical screwdriver set can be used to repair most household appliances, electronic products and other precision equipment. , air conditioners, fans, refrigerators, etc. PCs, computers, laptops, tablets, cameras, game consoles, controllers, watches, glasses, and other electronic devices. The for toolbox to meet every customer's . Precise Handle: The handle is enlarged and equipped with silicone material, which is ergonomic and non-. The screwdriver has a magnetic tip for more efficient screw tightening. Equipped with flexible extension rods and anti-static tweezers, each part can be easily grasped and easily moved to narrow where the handle cannot penetrate. Comes with Professional Storage Box: The screwdriver set comes with a shockproof storage box made of PP material. All parts are packaged in one place, saving time and space in the garage or tool cabinet. The storage space is thoughtful, the parts are in the same place, the size is the same, and it is not easy to fall. Color: As Shown Material: Chromium-vanadium alloy steel Package Contents: 120 x precision mechanical screwdriver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.