WISEUP Combination wrenches 8mm High Quality Material The wrench is made of CR-V chrome-vanadium steel as a whole. After heat treatment, the hardness reaches HRC60, the torque is large, the wear resistance is good, the surface is plated with 4 layers of nickel and 1 layer of chromium, which is not easy to break, matt design, not easy to rust, and prolong the life of the wrench 180 ° Variable Angle DesignRatchet wrench flex head can adjust the angle at will, which helps to reach the narrow space that cannot be reached by fixed ratchet wrench, and improves work efficiency 5 ° Working Swing Arch Ratcheting wrench is composed of 72 teeth, which only needs 5 ° to rotate once. The angle can be reset without removing the Ratcheting wrench set. Ratchet cycle replaces repetitive actions, which is fast and labor-saving Dual-purpose Industrial Structure 360 ° thickened closed-loop design, small backlash and stronger torque; The national standard opening design is firm and durable, with large bearing capacity and is not easy to crack Important Reminder: Please note that this kit is not suitable for cutting hard metal, hard wood, or density board.WISEUP has been Founded for 20 Years Who is always Committed to Hardware Manual and Electric Tools,as well as Pneumatic Tools, Auto Repair, Decoration etc. Helping you with your home DIY remodeling as well as work needs