The cotton patches from Pro-shot are made from 100 percent cotton flannel fabric for purposes of absorbing foreign matter and residue. Each 1.75 inch cotton patch is made with a high thread count to pick up all of the remaining residue, but not tamper with the barrel's rifling.Specifications:Category : Cleaning and RestorationType : Cleaning PatchesSize : 7mm/.38/6mmQuantity : 500 Per PackBristle Type : CottonLength : 1.75"Material : Cotton