O'Brien Pliers O'Brien Pliers 678-311 For precise forming of small helical loops and intraoral tip back bends on stainless steel wires up to .020" (.51 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.