The Roller Guide is used to push through conduit with cable already in place. The rollers prevent the rod from wedging in under the cable as they rotate on hardened shoulder bolts. The shank attaches directly to the swivel rod end to provide axial rotation. For use with 3/8" and 1/2" duct rodders. It helps to reduce the strain on both your wrist and the existing cable while you work, delivering superior performance with minimal effort.