The Pro-Shot Products 13/4-500 consists of cotton patches specifically devised by Pro-shot. Crafted from 100 percent cotton flannel fabric, these patches serve the primary function of absorbing any foreign debris and residue.Each patch measures 1.75 inches and boasts a high thread count, ensuring it effectively picks up any remaining residue. Importantly, the design of the patches ensures they will not interfere with the rifling of the barrel.