Looking for the best lubricant for your choke tubes? Look no further than Carlson's Choke Tube Lubricant! Carlson's Choke Tube Lubricant is excellent for use on all choke tubes. It also works great on fully automatic bolt locks, triggers, bolts, and slides/rails. Operates smoothly and cleanly in intense cold (-100 degrees Fahrenheit) and will also withstand extreme heat (+750 degrees Fahrenheit). This lubricant offers extreme pressure properties that are guaranteed to reduce friction and wear on firearms and choke tubes. This product does not attract dust, dirt, or powder fouling like most petroleum-based products and does not contain Teflon or PTFE additives. Comes in a 30 ml syringe.