Traditions™ new BlackOut 209™ is an advanced formula that helps clean fouling from your muzzleloader when using BlackHorn 209 Powder. The all-in-one oil based cleaner helps reduce fouling and treats the barrel to help protect against rust. Easy to use and carry! These patches have an all-in-one oil-based cleaner which reduces fouling and treats the barrel to help protect against rust when using Blackhorn 209 powder. 2.5" round patches, 100 per jar. For .45-.54 caliber.