Headstock thread adaptor.
To fit onto a lathe with M20 x 2.0mm headstock thread.
To mount a scroll chuck (or face plate) with M33 x 3.5mm thread.
Suitalbe for use with Charnwood Scroll Chucks Nexus3, Viper3 & Viper5. Plus any other brand with a M33 x 3.5mm thread.
Includes 2 x 8mm diameter holes to aid tightening or removal with a knock out bar.