A conduit body can be used to provide pulling access in a run of conduit, to allow more bends to be made in a particular section of conduit, to conserve space where a full size bend radius would be impractical or impossible, or to split a conduit path into multiple directions. Conductors may not be spliced inside a conduit body, unless it is specifically listed for such use.More over,  Malleable-Iron types feature built-in pulling rollers that help prevent damage when cables are pulled through hubs. Flat-back models provide greater cubic content for easier wire pulling, and additional room for splicing. Fit flush and snug against flat surfaces for stable installation.