Drennan Winder Bungs,The Drennan Polemaster winder bungs are produced from an extra tough, ultra light material in 4 sizes to fit a wide range of pole top sections.The winders will hold numerous turns of elastic allowing small lengths to be let out or wound in to make precise adjustments of the elastic tension.The winder section can be easily removed from the bung if required and the long extractor rod has a ‘twistlock’ location system and it is a simple operation to remove the bung from inside the pole when required.