4" x 10' (4 inch Diameter by 10 feet Long) Ultra Flex Clear Vue Heavy Duty PVC Dust Debris and Fume Collection Hose Made in USA! : Amazon.co.uk: DIY & Tools
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PVC Dust Collection Hose (4.0 Inch Diameter x 10 Feet Length) : Amazon.co.uk: DIY & Tools
70143 PVC Dust Collection Hose (4 Inch X 20 Feet), Flexible Clear View Heavy Dut | eBay