These patches are 100% cotton flannel fabric that are used for the purpose of absorbing foreign matter and residue and in turn carry it through the bore with the least amount of abrasive contact to the barrel's rifling. These patches are known worldwide for their superior cleaning ability.Pro-Shot Products offer the ultimate in firearms maintenance. The longevity and accuracy potential of your firearms depend on the quality of care taken in use and storage. Pro-Shot Products has developed the finest equipment and supplies to achieve the highest expectation of firearms care.