Hoppe's Bench Rest 9 Copper Gun Bore Cleaner 4 oz. 9 Nitro Powder Solvent 4 oz Bottle 904B is the most universally used solvent for removing primer powder lead and metal fouling - for preventing rust. Hoppes 9 Nitro Solvent is quick super-efficient safe and easy to use. No.9 Hoppe's Solvent flows freely and penetrates rapidly. Note: Hazardous or flammable materials cannot ship UPS red (air) or international. Specifications for Hoppe's Bench Rest 9 Copper Gun Bore Cleaner: Manufacturer: Hoppe's 9 Quantity: 1 Size: 4 oz Application: Gun Cleaning Package Contents: Hoppes No 9 Nitro Powder Solvent 4 oz Bottle 904B Hoppes No 9 Nitro Powder Solvent 4 oz Bottle 904B