Wooster Mohair Blend Jumbo-Koter roller covers combine mohair and polyester fabric to help create a smooth finish with protective coatings. Suitable for enamels, varnishes, urethanes, epoxies and floor coatings, these covers feature a polypropylene core that resists water, solvents and cracking. Each cover measures 4.5 inches wide with a 1/4-inch nap designed for smooth surfaces. The Jumbo-Koter format works with a compatible Jumbo-Koter mini roller frame. The closed end helps paint into corners. Includes 10 roller covers. Manufacturer model: RR504.