Hurricane, Headstock Spindle Adapter, Converts 3/4" x 10 TPI to 1" x 8 TPI - The Woodturning Store
PSI Woodworking L5818 Lathe Headstock Spindle Adapter 5/8" Shopsmith to 1" x 8tpi : Amazon.co.uk: DIY & Tools
PSI Woodworking LA11418 Lathe Headstock Spindle Adapter 1-1/4" x 8tpi to 1" x 8tpi : Amazon.co.uk: DIY & Tools
4-Inch 4-Jaw Self-Centering Chuck Set Adapter 1" 8TPI To M33 X 3.5 For Wood Lathe Chuck Converts Turning Tools Lathe Headstock Spindle Adapter with 1-Inch x 8TPI Thread : Amazon.co.uk: Business, Industry
Spindle Thread Adaptor (M33 x 3.5mm Female to 1" x 8 TPI Male) - Biven Machinery Sales
1" x 12TPI Headstock Spindle Adapter at Grizzly.com