Hoppe's 9 Synthetic BlendGun Bore Cleaner Bottle 5oz. Hoppe's No. 9 Synthetic Blend Bore Cleaner is especially designed for the modern firearm and is built on the great tradition started by Frank Hoppe in 1903. Specifications for Hoppe's 9 Gun Cleaning Synthetic Blend: Manufacturer: Hoppe's 9 Weight: 5 oz Additional Features: Bottle Features of Hoppe's NO. 9 Synthetic Blend Bore Cleaner: Superior removal of carbon lead and copper fouling Safe on anodized aluminum titanium steel chrome nickel plastic polycarbonate and rubber Same great traditional Hoppe's 9 smell Biodegradable / Non-flammable Package Contents: Hoppe's 9 Gun Cleaning Synthetic Blend Hoppe's 9 904GP: Synthetic BlendGun Bore Cleaner Bottle 5oz