Buy RU150 Commercial Vacuum Adapter - 1.5" to 1.25" from Canada at McHardyvac.com
Vacuum Adapters for Power Tool Dust Collection (.STL file for 3D Print) - FarOutRide
Portable Skim Vacuum Adapter Plate with 90 Degree Elbow Fittings Tools Clean Accessories Pool for Pool SPA Pond - Walmart.com
Amazon.com: Universal Vacuum Hose Adapter Kit Reducer Attachment Set Converter from 1 1/2 inch to 1 1/4 inch from 1 3/8 inch to 1 1/4 inch Dust Hose Port Adapter : Home & Kitchen