A carriage stop for an import mini lathe such as a Central Machine works, Seig C2, or C3, grizzly, little machine shop, etc…
should be compatible with anything this is: https://littlemachineshop.com/products/product_view.php?ProductID=2705&srsltid=AfmBOorGdYJOd_z-V6-WRxMrGYJ9zTHhMjjWbct4CnPuozdzvzimOH4R
Requires an M5 heat set insert, and M5x25 (or longer) screw.
The author marked this model as their own original creation.