Amazon.com: Compatible Replacement for Shop Vac and Ridgid Style Wet Dry Vacuum Cleaner Crushproof Industrial Commercial Grade Extension Hose with Air Suction Control, Lengths up to 50 Foot by 1-1/4 inch :
Cen-Tec Systems 20 ft. Extension Hose for Wet/Dry Vacuums 92707 - The Home Depot
Shop-Vac® 8 foot X 1-1/4 inch diameter Hose with Long Extension End | Shop-Vac Store