Linzer RC 645 0900 RC645 Roller Cover, 9" x 3/4" Holds more paint for increased production For all paints and stains 2-Ply polypropylene core adds durability and strength The nap is 3/4-inches and the length is 9-inches 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