Unique surface of these rollers will allow you to paint 30% faster. Paint sticks to the wall, not to the roller. Roller cover cleans fast with quick rinsing. Use with all paints. 9" roller with 1/4" nap for use on smooth surfaces. Use with all standard 9" roller frames. Packaged as 3-pack. Replacement covers for tray set model No. 08101C.