The wrench is precisely engineered to align seamlessly with the FX7 action, ensuring accurate barrel installation. Constructed from high-quality 416 stainless steel, it is indispensable for the correct attachment of the barrel to the FX7 action. 416 stainless steel - a martensitic alloy known for its high machinability, corrosion resistance and moderate strength, ideal for precision components in industrial and engineering applications Compatible with 3/8 inches drive Barrel torque is 65 ft-lb Optimized modular action wrench for enhanced compatibility with short action customs systems