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. Simply attach to a suitable line to pull thru duct or conduit. Cleans out water and debris when traveling through Rigid, EMT, IMC, PVC, and Flexible conduit. Foam carriers may also be used to spread lubricant through the duct prior to pulling cable creating a smoother and faster pull. FC8 package includes 5 carriers for use in 3 inch conduit.