Features: Brand new and high quality S2 steel precision batch head/sleeve can be used for disassembling and finishing various electronic product, small household appliances and daily objects. Rotating design, knurling grooves designed of pen holder can make both hands comfortable. The aluminum alloy handle is designed in section, which is easy to hold and operate, and the six-section design is more suitable for finger. Built-in strong magnet is easy to plug in and out, and the tool holder is built-in strong magnet, which can automatically absorb the screwdriver to easily suck up small screws. The handle is hidden in the center, and it can popping up with a light push, with novel mechanism design. Easy to open and push out, easy to access without hindrance. Specifications: Material:Aluminium Alloy Type:30 in 1/40 in 1/44 in 1 30 in 1/44 in 1:Approx.36x36x150mm/1.41x1.41x5.9inch 40 in 1:Approx.72x37x153mm/2.83x1.45x6.02inch Package Includes: 1 Set Precision Screwdriver note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.