Schwing DN80 Concrete Pump pipe Cleaning Balll size from 1inch-8inch, soft, medium, and hard available, usding for Schwing, PM, NameConcrete Pump ... inch) soft ,hard ,medium soft DN125(5 inch) soft ,hard ,medium soft DN150(6 inch) soft ,hard ,medium softDN180(7inch) soft ,hard ,medium softDN1200(7inch) soft ,hard ...