Description: Accessories: This precision screwdriver set has 120 screwdriver bits, 22 practical accessories, such as magnetizer, magnetic pad, ESD tweezers, suction cups, crowbars, cleaning brushes, etc. Humanized Design: The screwdriver has a particle handle and an ergonomic rubber handle. The top can be rotated to provide a comfortable grip and smooth rotation. The magnetic bit holder transmits magnetism through the screwdriver bit to help you handle small screws. The flexible extension shaft can be used to remove screws in narrow places. Magnetic Design: This professional tool set has 2 magnetic tools to help save your energy and time. The 5.7x3.3 magnetic engineering mat can keep all the tiny screws and parts in order, preventing loss and mess. Organize and Portable: All screwdriver bits are stored in the rubber head holder, and marked with type and size for quick identification. The repair tools are packed in a tear-resistant and shock-resistant Oxford bag that provides comprehensive protection and organized storage. The tool bag with nylon straps is lightweight and convenient, and easy to carry. 60 HRC Chrome Vanadium Steel: The precision drill bit is made of 60HRC chrome vanadium steel, which is wear-resistant, anti-oxidation, anti-corrosion, strong and durable. Specification: System: Metric Material: 60 HRC Chrome Vanadium Alloy Steel Number of Pieces: 142 Head Type: Y-shaped, cross, straight, plum blossom, star Size Chart: 22x14x4cm / 8.66x5.51x4inch Package Includes: 1 Set 142 in 1 Screwdriver 1 Piece Storage Bag Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!