Live Tailstock Chuck Adapter: 1 in. x 8tpi - #2MT Shaft at Penn State Industries
Hurricane, Chuck Insert Adapter for the HTC100 and HTC125 Chucks, 1 1/2" x 8 TPI - The Woodturning Store
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