This 4 in. x 9/16 in. Microfiber, Mighty Mini roller cover is to be used with the Barracuda jumbo cage roller frame. Not for use with normal rod roller frames. European Microfiber Rollers Designed for Today's Paint & Stains. Superior Pick Up & Finish. Special blend of high-capacity non-shedding European woven fabric. Good for all paints and stains, especially new low VOC coatings.