Lingual Arch Forming Pliers Lingual Arch Forming Pliers 678-309 Designed to create double back and triple back bends in lingual arch wires, up to .036" (.91 mm). 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.