... Pump pipe Cleaning Balll size from 1inch-8inch, soft, medium, and hard available, usding for Schwing, PM, NameConcrete ... BallsizeDN25(1inch) soft ,hard ,medium softDN50(2inch) soft ,hard ,medium softDN80(3 inch) soft ,hard ,medium softDN100(4 inch) soft ,hard ... 6 inch) soft ,hard ,medium softDN180(7inch) soft ,hard ,medium softDN1200(7inch) soft ,hard ,medium softOther sizes and types upon customer ...