Hoppes No.9 Plus 1 pint Bottle is made especially for black powder shooters. Hoppe's No. 9 Plus Black Powder Solvent 990 is a black powder solvent and patch lubricant. Hoppes 9 Plus Solvent lubricates as Hoppe's Nine Plus Black Powder Solvent & Patch Lubricant cleans fouling from the bore and protects against rust and corrosion. Hoppe 9 Plus Black Powder is equally effective for deep or shallow grooved barrels. Hoppes 9+ lubricates patches.