Includes 100 square patchesOtis Technology 100% cotton square gun cleaning patches are not only more absorbent, but will not leave streaks in your barrel.Intended for use with Solid Rod Gun Cleaning Jags - Please use Round Patches with Otis Pull-Through Gun Cleaning SystemsChoose the right patches for the job3" Patches.50 CAL, 12.9MM, .54 CAL, .58 CAL, 410GA, 28GA, 20GA,16GA,12GA2.5" Patches.30, .30-06, .30-30, .303, .308, .300 Win. Mag., .32 CAL, 7.62MM,8MM, .338, .340, .35 CAL, .357, .370, .375, .380, .38 CAL, 9MM,9.3MM, .40, .401, .404, .405, .41 CAL, 10.75, 10MM, .44, .444, .45,.458 CAL