1/2 Allen Orban Knife Round, EverEdge™ 1/2 Allen Orban Knife Round, EverEdge™ Sign in to save to your list KO12KPO3R9 30% thinner than the standard Orban, features a rounded angled blade and contra-angled shank for posterior use. Also useful for excising interproximal tissue. Where to Buy Ask a specialist