100% Cotton - - Bulk Patches for weapon cleaning. Available in the following : 7/8'' - Small Bore (pack of 100) 1 1/4'' - .22-.270 Caliber (pack of 100) 2 1/4'' - 9mm / 10mm / .38/.45 Cal / 410-20 GA (pack of 50) 3'' - 16-12 Gauge (pack pf 25)