Product name: 42-piece multi-purpose ratchet screwdriver set Number of batch heads: 8 long batch heads +32 short batch heads Handle material: 6063 forged aluminum alloy (handle body)+5030 alloy steel (gear, etc.) Batch head material :S2 alloy steel Shell material: ABS+PP Package size: 16.6*9.45*3.95cm/6.54*3.72*1.56 inches 42-in-1 Screwdriver kit: Ratchet screwdriver kit provides 40 magnetic alloy steel bits, including 32 short bits and 8 long bits, 7 types of batch heads, suitable for all types of maintenance scenarios, such as home, work, DIY and other scenarios. , High quality material: S2 alloy steel, with continuous hot working technology, strong and light, hard but not brittle, full toughness, removable structure, can be a variety of combinations and adjustments. Super hard hot forged aluminum alloy, auxiliary high precision CNC-body forming. General steel light, 1/2 light weight, small space is also comfortable. Multi-function handle: multi-function ratchet screwdriver and wrench handle, switch at will, multi-function, adapt to more scenes. Tight space, deep cavity structure, handy. 58 teeth positive and negative ratchet structure, labor saving design, positive and negative adjustment, screw in a small space, long and short lot head switch, multi-dimensional maintenance and use Angle, comfortable feel, long time not tired. Quick Recognition: Designed for easy recognition of color rings, the screwdriver kit includes intuitive color-coded circles for quick bit recognition to simplify your workflow. Magnetic slot design: strong magnetic in the handle, closely bite with the hexagonal head, the box _ set on the magnetic slot, at any time for the magnetic weakening of the batch head to increase magnetism, easy to use, easy to carry.