The UJK Technology Parf Dust Port firmly attaches to the Parf Guide Block (part B). This is invaluable when drilling into MDF to produce your multifunction bench top. It allows direct connection to a vacuum extractor removing dust and debris. This arrangement prevents nasty MDF dust entering the working environment and ensures the drill bushing remains free of debris. The design allows the dust port to fit on either side of the guide block - whichever is most convenient. The outlet is 38mm diameter for a straightforward connection to many common extractor hoses (some extractors may require a simple taper adaptor).