Wagner Spraytech 0155206K 155206 9-by-3/8-Inch Power Roller Cover 30% plastic, 70% Polyester Fiber Imported With 3/8" Nap These Are Special Perforated Roller Covers All In 1 Paint Roller Applicator Designed for Wagner 929, 949 and 959, PaintMate and StainMate 3/8" polyester blend nap designed for smooth surfaces Can be washed and used at a future time 9" roller length