The tightest weave 28/24 mesh (USP III - 52 yarns/inch) of cotton gauze makes the best wiper when fully unfolded. This ?premium? grade of cheesecloth has the most weight, produces less snags and fewer loose threads, and provides the most surface area to collect dirt. Bond uses only US Pharmacopoea (USP) medical-grade gauze. A Roll is 36 inches folded to 4-ply, 9 inch width by 150 continuous yards length (equivalent to 300 standard pieces). Rolls are the most economical form of tack cloth "put-up". A variety of proprietary tack treatment formulas is available. Choose from Bond's GOLD STANDARD, GOLD LESS TACKY and WHITE STANDARD -- all at the same price. Inquire about larger rolls at discount, customized tack formulas or treatment weights, volume or contract pricing, and many other options.