Distal Cinch Back Hand Instrument Distal Cinch Back Hand Instrument 678-506 Bends stainless steel archwire distal to the 1st or 2nd molar; up to .021"x .025" (.53 mm x 64 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.