... vise, Model 383-AC can cut level concave, Mul-T lock concave, slanting concave, L-shaped and snake-shaped slot keys Features:1) ... is of tilting type and it can duplicate level concave, Mul-T lock concave, slanting concave (such as KESO and KABA keys), L-shaped ... finished within just 10 seconds. It can also duplicate cylindrical concave and tubular arched hole keys (the quick replaceable 381AC vises ...