A 2-way blast gate based on the 58mm O/D hose diameter used on festool connections. There are 2 types of manifold options, either 90 degree bend or straight. Compatibility: Any front connection extractor model will happily accept either manifold type without any extension tubes, however the 90 degree manifold is preferred as it does not stick out as much. To use the blast gate with a top connection extractor such as the new Midi, you will need to use an extension tube so that the gates clear the top of the extractor. To use the 90 degree manifold you will need the 160mm extension tube. To use the straight manifold you will need the 80mm extension tube. When using the WCR-1000 the 90 degree manifold is preferred to position the blast gates to the side for easier use. 50mm Hose adapters for the blast gate can be found here: https://www.etsy.com/uk/listing/1826448026/50mm-hose-adapter-for-festool-compatible