1. Durable: Constructed of CR-V carbon steel, it's built to last and can withstand years of heavy use. Premium chrome plated with polished finishes, easy to clean and anti-corrosion. 2. Flexible Rotating Wrench: Unlike other wrenches, this wrench allows you to work at a 45 angle to assemble bolts and nuts in different directions. Quick 360 degree rotating heads, just click between the different sizes or turn the wrench, you instantly have the tool you need for the job. 3. UNIVERSAL KEY: The key comes with 8 different sizes on both heads. Sizes: 8mm (5/16"), 10mm (3/8"), 11mm (7/16"), 13mm (1/2"), 14 (9/16"), 16mm (5 /8"), 17mm (11/16"), 19mm (3/4"). It is a great tool that can replace many traditional keys. 4. Comfortable Grip: The adjustable wrench has a non-slip handle, which provides greater ease of use and increases work efficiency. 5. Widely Used: The wrench is thick, sturdy and professional, ideal for auto repair, electrical maintenance, home emergency repair and furniture assembly, etc.