GB's Foam Line Carrier is designed for use with any type of blower or vacuum system. These line carriers are constructed from durable foam for repeated use over a long lifespan. Foam carriers clean water and debris from most conduit including rigid, EMT, IMC, PVC or flexible. It is durable for indefinite re-use. They may also be used to spread lubricant through the duct prior to pulling cable creating a smoother and faster pull.