hoke Tube & Breech Plug grease is a synthetic-based lubricant that is able to withstand the high temperatures of your shotgun. Applying a small amount Choke Tube & Breech Plug grease to your choke tube will ease cleaning, reduce wear, and prevent your choke tubes from seizing with steel shot loads, heavy buffered turkey loads, or with repeated shooting. Choke Tube & Breech Plug grease comes in a .65 oz. tube with handy applicator tip.