Ducted vacuum 45 degree elbow. This elbow can be used to create a line-offset, allowing for a smoother air (dust) flow. Using 45deg elbow, instead of 90deg "sharp" elbow, will not only reduce the amount of air-friction but also may avoid pipe-blockages.
Suitable for use with ducted vacuum PVC pipes that measure 50mm in diameter on the outside.
Please note that ducted vacuum systems have their own standard pipe and fittings, this fitting is NOT the same as the one used in water plumbing.