NOVA Mini Jaws enrich the NOVA chuck system by extending its potential into the mini turning area. The Mini Step Jaw expands into a recess between 37mm and 58mm diameter. When gripping a spigot the range is 10.5mm to 31.5mm diameter. These jaws will also hold square stock between 9mm and 28mm. Suits both SuperNova2 and Nova G3 chucks.