These hardened studs & nuts are used to mount chucks and adapters on the mini lathe spindle. Because they are hardened they will last a lot longer than the ones that come on the mini lathe.
4 M6 x 30 studs and 4 M6 nuts.
These are the studs and nuts you need to mount a 3" 4-jaw chuck on the mini lathe. Use them to mount your shop-made