Slip 2000 Gas Piston Parts and Choke Tube Cleaner was designed with your health and safety in mind. Unlike other products, this product is non-flammable, non-hazardous and it is biodegradable. Slip 2000 Gas Piston Parts and Choke Tube Cleaner provides you with a safe effective way to clean carbon and plastic wad fouling from choke tubes and all those Semi automatic shotguns gas system parts.