High quality Raw Materials: Aluminum Bronze Adjustable Wrenches are Made of Expensive and Rare non-ferrous metal in good proportion. Surface Color: Silver Yellow. Appropriate for operation with ethylene concentration below7.8%. Standard Code GB ExⅡB. Hardness: 20-30 HRC. Advanced Die-forged Process: Aluminum Bronze Adjustable Wrenches One-time Die-forge, high hardness, strong torque, Completely in accordance with Germany DIN standard. Design Details: Sizes stamped on both sides of each tools for easy identification. All tools are put in each printed size pocket and can fit into most toolbox or drawers, making organizing easy. Application: Aluminum Bronze Adjustable Wrenches are Used for cutting, widely used in petro-chemical, oil production, gas production, oil and gas pipelines, power generation, mining, plastics, chemical fiber and other industries. Service: WEDO TOOLS has been highly praised by our new and old customers because of our user-friendly design concept, continuous improvement of excellent quality and after-sales services. To enhance customers’ satisfaction, we set up service centers in Germany, Russia, South Korea, Singapore, Canada, the United States, the united Arab emirates, in order to provide timely after-sales service. High quality Raw Materials: Aluminum Bronze Adjustable Wrenches are Made of Expensive and Rare non-ferrous metal in good proportion. Surface Color: Silver Yellow. Appropriate for operation with ethylene concentration below7.8%. Standard Code GB ExⅡB. Non-magnetic. Hardness: 20-30 HRC.Advanced Die-forged Process: Aluminum Bronze Adjustable Wrenches One-time Die-forge, high hardness, strong torque, Completely in accordance with Germany DIN standard.Design Details: Sizes stamped on both sides of each tools for easy identification. All tools are put in each printed size pocket and can fit into most toolbox or drawers, making organizing easyApplication: Aluminum Bronze Adjustable Wrenches are Used for cutting, widely used in petro-chemical, oil production, gas production, oil and gas pipelines, power generation, mining, plastics, chemical fiber and other industries.Service: WEDO TOOLS has been highly praised by our new and old customers because of our user-friendly design concept, continuous improvement of excellent quality and after-sales services. To enhance customers’ satisfaction, we set up service centers in Germany, Russia, South Korea, Singapore, Canada, the United States, the united Arab emirates, in order to provide timely after-sales service.