1 1/2" Round, 6mm - .30 Cal. 100% Cotton Flannel Gun Cleaning Patches - 600 Count American Grown finest quality cotton, milled in America to Pro-Shot Specifications Consistent thickness, shape, and white in color Designed to handle all solvent types, even harsh chemicals SWT- Superior Weave Technology- Exclusive thread count with a weave designed to catch/trap more fouling Finished on both sides for extreme absorbency Packaged in reusable zipper top bags Made in USA