Wheeler's Delta Series® Professional Armorer's Wrench is designed to be the last wrench you'll need for building your perfect rifle. 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.