Linzer RC 144 0700 Pylam Roller Cover, 7" x 1/2" High density polyester fabric For all paints and stains 2-Ply polypropylene core adds durability and strength The nap is 1/2-Inch and the length is 7-Inch Linzer products corporation has been providing excellence in the painting industry since 1892. Through it all, we have grown to be one of the world's largest manufacturers, importers and exporters of paint tools and accessories