CSB-2 Cleaning Pigs consist of a carbon-steel body equipped with two (2) easily replaceable polyurethane cups and spring-mounted brush assemblies. Options and other configurations include carbon-steel, stainless-steel or aluminum body; cups manufactured from neoprene, viton, epdm, buna-n or other elastomer compounds for special services; carbon-steel, stainless-steel, prostran brushes or polyurethane blades; aluminum or steel gauging plate of varying thickness (available with slots); transmitter or pinger cavity; magnets for ferrous debris or for magnetic detection; modified configuration to include discs for increased sealing capabilities; customized dimensions for special pigging applications.