The M-114A and M-114B Convex Cuff Stakes are sold separately yet are designed to be used in progression to form bracelets and other narrow, convex jewelry shapes. First you would use the M-114A starting stake which has a 5mm top edge (or the M-114 if you prefer)  to get the basic shape started.  Then you would use this 3mm wide M-114B finishing stake to refine the design.

Compatible with Fretz H-1L and T-101 stake holders as well as the E-101 Extension Holder for a deeper reach.  Note: even though some holders are shown in the picture, all are sold separately.  Fretz stakes are made from hardened 420 stainless steel with high polish working areas that protect your workpieces from accidental markings. Made in Vietnam.