WoodRiver Dust Connection - 1-1/4" ID to 2-1/4" OD Adapter Dust Collection Fitting
RIDGID Hose and Accessory Adapter Kit for RIDGID Wet/Dry Shop Vacuums VT1755 - The Home Depot
3M™ Vacuum Hose Fitting Adapter 28304, 1 in External Hose Thread x 1 in Friction Fitting Barb, 1 per case 7000045250 | Ward-Kennedy
Amazon.com: VPC Dust Collection Hose for Home and Shop Vacuums with Expanded Multi-Brand Power Tool Adapter Set Fittings | Orange (10 FEET) : Tools & Home Improvement
Vacuum Adapters for Power Tool Dust Collection (.STL file for 3D Print) - FarOutRide
Festool to Dust Right Expandable Hose Adapter by ex-nerd | Download free STL model | Printables.com