タイトルまたは説明

 Protect the drawing headâ‘ (one end of the duct rodder, copper plated. There is screw thread in it and can be loosened or tightened) of the duct rodder from being broken. Before put the duct rodder into using, please make sure that the drawing head should be pulled through from the flexible rollerâ‘¡ in the frame first.  And when it happens to pull out all the duct rodder from the trolley, please pay attention that the another end drawing head of rodder is being fixed on the round ring in the frame. So when pulling out all the rodder,  please also protect it from being broken. And when pull back the rodder, also make sure that this end drawing head should be fixed in the ring first.