From Tactical to Practical, Pro-Shot is your one source for quality firearms cleaning products. Pro-Shot Products was founded in 1982 with one goal, to make quality firearms cleaning accessories that worked faster and easier. Pro-Shot 100% Cotton Flannel Finished Both Sides Cleaning Patches have become known worldwide for Superior Consistency and Cleaning Power! Our patches carry the fouling through the bore with the least amount of abrasive contact to the barrel's rifling.Regular cleaning helps to reduce metal fouling which is something that builds upon itself over a period of time. This will cause subtle deterioration of group size and "flyers".Specifications and Features:Manufacturer Number: 3/4-500 .17-.22 Cal. Rimfire3/4" Square100% Cotton Flannel Fabric500 CountFits: .17-.22 Cal. Rimfire Firearms