1/2 Orban DE Knife, Black Line 1/2 Orban DE Knife, Black Line KO1/2X Angled blade and contra-angled shank for posterior use. Also useful for excising interproximal tissue. Where to Buy x Category Dealer PartnersSales RepresentativeStrategic MarketsSchools RepresentativeAccutron™ Equipment Sales Zip Code Find RepresentativeReset Select a category, input a zip code and click on Find Representative, or explore the complete list here.