PSI Woodworking L5818 Lathe Headstock Spindle Adapter 5/8" Shopsmith to 1" x 8tpi
Quality Woodworking Lathe Headstock Spindle Adapter ((MT 1" X 8 TPI TO FT 7/8" X 14 TPI)) - Amazon.com
kimllier Wood Lathe Chuck Spindle Adapter, Lathe Headstock Spindle Adapter Converts 3/4 Inch x 10 TPI to 1 Inch x 8TPI for Woodworking Lathe - Amazon.com
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Nova Lathe Spindle Adapter, Male to Female Various Sizes -Rockler