Spikes Tactical Wrench - Spikes 6-Pin BAR Barrel Nut 1/2 Drive. Spikes Tactical crafted these Specialty Wrenches from 4140 chromoly steel that was heat treated for extra strength during your toughest gunsmithing sessions. The coating on the Spikes Tactical 6-Pin BAR Barrel Nut 1/2 Drive Wrench is also incredibly durable providing a reliable tool that will last a long time. Be prepared in the worst case scenario and have the Spikes Tactical 6-Pin Barrel Nut 1/2 Drive Wrench on hand. Specifications for Spikes Tactical 6-Pin BAR Barrel Nut 1/2 Drive Wrench: Manufacturer: Spikes Tactical Condition: New Country of Origin: USA Features of Spikes Tactical 6-Pin BAR Barrel Nut 1/2 Drive Wrench: Material: 4140 Chromoly Steel Heat Treated Finish: Black Nitrate Package Contents: Spikes Tactical 6-Pin BAR Barrel Nut 1/2 Drive Wrench Spikes Tactical SAT1009: Wrench - Spikes 6-Pin BAR Barrel Nut 1/2 Drive