Concrete Pump Cleaning Ball size from 1''-8'', soft, medium, and hard available, usding for Schwing, PM, Kyokuto, Cifa, Sany, NameConcrete Pump Cleaning BallsizeDN25(1inch ... , PM, Kyokuto, CIFA, Sany, Zoomlion, and so on Schwing Rubber Sponge Cleaning Ball