POWERTEC 70140 2-1/2” to 1-1/4” Hose Reducer – Conversion Unit for Dust Collection Accessories - Amazon.com
U.S. Solid 2pcs Brass Pipe Fitting Adapter, Male Pipe x Female Pipe, 1/2" x 1/
Amazon.com: Universal 2.25" ID 2.5" ID Exhaust Pipe Adapter Connector Reducer 304 Stainless Steel 2.25 Inch to 2.5 Inch 2 1/4” ID to 2 1/2” ID kit : Everything Else
LTWFITTING 1/2 in. FIP x 1/4 in. MIP Brass Pipe Adapter Fitting (5-Pack) HF1028405 - The Home Depot
Amazon.com: uxcell 1/4 Inch Drive (F) x 1/2 Inch (M) Socket Adapter, Female to Male : Tools & Home Improvement
Yakamoz Quick Release 1/2-Inch Square Drive to 1/4-Inch Hex Female Socket Adapter Converter Chuck Adaptor for Impact and Ratchet Wrenches - Amazon.com