Wheeled Duct Rodder Helps Cable & Wire Placing in Ducts Wheeled duct rodder performs apparent advantage over portable duct rodder when the conduit or pipe is very long or complicated. Wheeled duct rodder is made with a rubber wheel on the cage, which makes it easier to transport at the job site. The wheel can be made into pneumatic or solid rubber tire with iron wheel rim. Different from portable duct rodder, wheeled duct rodder is often manufactured with the pulling rod diameter varying from 11mm to 16mm. Duct rodder with outboard wheels Duct rodder with outboard wheels is commonly used for threading in conduits. Two wheels on the duct rodder are installed on one side, outside against the end of bottom frame. The outboard wheels are designed for reducing the pressure on the ground. When moving the duct rodder to the job site, press down hard on the grip of the frame, towards the direction of the wheel, and move on the wheels.