Product name: 8-in-1 screwdriverSize: 12.5cm long after folding, 21cm long after unfolding, 5cm thick (diameter)Steel: after heat treatment and quenching process! Make the material harder!Hardness: 60HRCPower supply: 2 No. 7 batteries (not included)Specifications:1. [CrV alloy head design]: It has high strength, great toughness and low hardenability, and is commonly used for materials with high surface hardness and wear resistance.2. [Humanized lock catch design]: The lock catch design is adopted, making it easier to switch the screwdriver.3. [Self contained lighting lamp]: The product has 6 lamp beads at one end, which can be lit by only three No. 7 batteries, and there is no longer any fear of being invisible at night.4. [8 screwdriver specifications]: It has 8 different screwdriver specifications at the same time, allowing you to switch at will.5. [Easy to carry]: easy to store and carry.Package Included: 1 x 8-in-1 screwdriver.