Replacement roller is completely interchangeable with all Rol-Dri units. It’s specially designed to push water off the court surface for faster drying. The roller is made of tough polyvinyl alcohol (PVA) foam. Then non-deteriorating foam is molded directly onto the roller core for a seamless fit and rapid, streakless drying. Roller fits into powder-coated stainless steel frame and fastened with stainless steel hardware. Has an anodized aluminum handle that fits into a powder-coated stainless steel T-socket. So, use the Rol-Dri Master Sponge Roller the day after rain so your players can get out and hit.