Expanding Ring Mandrel – Stainless Steel
Fits ring sizes S to Z+3 (USA 9-14).
It fits comfort ring cores to help make turning rings simple and easy.
Just mount the ring core on the closest sized mandrel step, then lightly tighten with the allen key and the mandrel will produce a solid grip on the ring core.
The shaft has a diameter of approx 12.75mm and a length of approx 35mm