Greenlee 39257 Flexible Mandrel， 4-Inch<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Useful for cleaning out mud， dirt， and light obstacles from ducts before installation of cable</li><li>Can be used around tight bends due to convex contacts between disks</li><li>Tapered profile allows pulling in either direction with pulling eyes on both ends</li><li>Polyurethane disks do not damage inner walls of duct</li><li>For use in 4-Inch ducts</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31a%2Bc4CWWwL.jpg" noproxy>