4 Inch ID x 12 feet Clear PVC Dust Collection Hose Flex Hose | eBay
Flexible Dust Extraction Hose L=3m D=102 mm | Scott+Sargeant UK
Dust Collection Hose — PantoRouter
POWERTEC 2-1/2 in. x 20 ft. Flexible PVC Dust Collection Hose, Clear Color 70144 - The Home Depot
Cen-Tec Systems 10 Ft. Hose for Home and Shop Vacuums with Universal Power Tool Adapter for Dust Collection in the Dust Collection Attachments department at Lowes.com
WoodRiver Dust Connection - 6" Flexible Hose End Cuff Fitting for Dust Collection System