1. DURABLE: Constructed of CR-V carbon steel material, it is built to last and can withstand years of heavy use. Premium quality chrome plated with polish 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. 360 degree fast rotating heads, just click between the different sizes or turn the key, 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's a great tool that can replace many traditional wrenches.4. Comfortable grip: The tiger wrench has an anti-slip grip, which provides more ease of use and increases work efficiency.5. Widely Used: The wrench is thick, heavy duty and professional, ideal for auto repair, electrical maintenance, home emergency repair and furniture assembly, etc.