This ring setter's clamp set helps you hold rings securely while setting stones. This set includes a handle (5-3/4"L) and nine nylon split-collet inserts that accommodate U.S. ring sizes 2 to 13. All components are neatly fitted into a convenient wood organizer box with brass closure. Includes installation diagrams and an Allen wrench. A short Allen-head bolt is also included that allows you to replace the thumb-wheel on the vertical positioning head, giving you improved access to rings when you need it.