USAReplacementparts Crank Shaft Adapter Taper to 1'' Inch Generator Pressure Washer Engine Bushing Made in The USA: Amazon.com: Tools & Home Improvement
0.5 in. Hex and Keyed Shaft Coupling - AndyMark, Inc
A-4 / FSO-400 Stub Shaft Adapter | CDS
Pololu - 12mm Hex Wheel Adapter for 6mm Shaft (2-Pack)
Lumberjack Tools™ Motor Shaft Adapter (30° Staking Tool™/45° Post Pointer XL™)
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CLIMAX METAL PRODUCTS, Clamp On, 1 in Bore, Step Up Adapter - 5AEZ1|SUA-100 - Grainger
1 to 1-1/4 x 3" Shaft Adapter Pulley Bore Reducer Sleeve Bushing Sleeve & Key | eBay
25 inch to .25 inch Shaft Coupling - Max-Gain Systems
Step Up Clamp-on Adapters SUA-Series On Climax Metal Products Company