Includes a high quality, stainless steel expanding ring mandrel, and a hex wrench: Small - Recommended for sizes 4.5, 5, 5.5, 6, 6.5, 7. Medium - Recommended for sizes 7.5, 8, 8.5, 9, 9.5, 10, 10.5 Large - Recommended for sizes 11, 11.5, 12, 12.5, 13 Extra Large - Recommended for sizes 13.5, 14, 14.5, 15, 15.5, 16. Stainless steel will never rust and will withstand sanding much longer than regular steel. The Expanding Ring Mandrels enable you to get a high level of precision when making rings. They allow you to expand the number of different styles you can properly make. Each step has plenty of space to work with. Check out our Ultimate Set to buy all four at a discount! Each shaft is 1/2" in diameter and is designed to work in a lathe or a drill. The length was kept short (3") so the full tool remains true while spinning.
