Concrete Pump pipe Spare parts Cleaning Ball Price Material: Sponge / Rubber Usage: Cleaning concrete pump and pipe Served Brands: Putzmeister,Schwing,Sany,Zoomlion Types: Soft,Medium soft,Hard. Color: Yellow,Green… Name Description Pump pipe Cleaning ball 2″ soft/medium/hard 3″ soft/medium/hard 4″ soft/medium/hard 5″ soft/medium/hard 6″ soft/medium/hard ball for cleaning concrete pump pipe Product name Concrete pump pipe cleaning sponge