375 per bag of 2 1/2" Square patches for .45 - .58 Caliber, 410, 28 & 20 gauge shotgun. Triple Twill fabric is a special weave that has hundreds of tiny "ridges and drop zones" which scrub and capture foulingt residues better than flannel patches. Butch's Triple Twill won't shed lint and has been specially treated to gain the absolute maximum in liquid absorbency.