Wheeler Engineering Delta Series - Professional Armorer's Wrench. This tool is what every gunsmith or armorer needs to be able to build or repair their AR-15. It's constructed from the highest quality materials delivering you the best performance for all your gunsmithing needs at a great value and includes 6 different essential AR tools. The handle has torque measurements included on the handle for accuracy with every build. Specifications for Wheeler Engineering Delta Series Professional Armorer's Wrench: Manufacturer: Wheeler Engineering Fabric/Material: Steel Color: Black Gun Model: AR-15 Condition: New Features of Wheeler Engineering Delta Series Professional Armorer's Wrench Castle Nut Wrench Package Contents: Wheeler Engineering Delta Series Professional Armorer's Wrench What firearm models does the manufacturer say Wheeler Engineering Delta Series Professional Armorer's Wrench is compatible with? The manufacturer suggests that Wheeler Engineering Delta Series Professional Armorer's Wrench is compatible with AR-15Wheeler Engineering 1099561: Delta Series - Professional Armorer's Wrench