BG210) This reusable nylon knitted mesh bag is handy for many uses. You can use it to strain pulp out of your wine must or grains out of your beer wort. Is also used to contain fruit pulp during a primary fermentation, while in the fermenter. Has a fine mesh to collect seeds, grains or strands of fruit fiber. Has an elastic band that will stretch over the opening of most 5 or 6 gallon pales.