Fits most mini lathe Toolslides. This is part of the modular NOVA Tool Rest System, a flexible system which allows you to mix and match your Toolrest Posts and Supports to create the perfect Toolrest for your needs. Requires one of the NOVA Tool Rest Bars (additional purchase) The 5/8 inch shaft and is 3-1/4 inch/196mm long, can fit to most Mini Lathe Toolside shafts. This threaded post enables you to unfasten different NOVA Toolrest bars and attach as needed. Check with your lathe manual or lathe supplier for details of your lathe if unsure.