POWERTEC 70147 Tapered Adapter, 4-Inch to 2-1/4-Inch

POWERTEC 70147 Tapered Adapter 4" to 2-1/4" Dust Collection Hose Reducer

Hose adapter 2" to 1-1/4" vacuum hose

6PCS Universal Shop Vac Vacuum Hose Adapter 32-45mm 1-1/4''-2-1/2'' for Wet Dry

POWERTEC 70291-P2 4 Inch Port to 2-1/2 Inch Hose Tapered Adapter Dust Collection

6 PCS Vacuum Hose Adapter Kit Universal Shop Vac Cleaner 1-1/4''-2-1/2'' 32-45mm

Numatic 32mm to 38mm Tapered Pipe Reducer (pack of 2)