High quality, unique hole structure provides optimum absorption of oil, grease and cutting fluids. 4-Ply construction absorbs 4 times more, and over 4 times faster than rags. Tork Advanced Wiper 440 has a rough side and a smooth side. Rough enough for stubborn dirt and smooth enough for sensitive surfaces. This product contains 100% recycled fibers.Replaces 132475 and 132476.EcoLogo Certified.