21B Burnisher 21B Burnisher BB21B6 Acorn-shaped instrument for forming occlusal anatomy in posterior restorations (3.0 mm - 2.7 mm). SKU Handle TNBB21B XTS™, Smooth Satin Steel™ BB21B8 #8 ResinEight™ BB21B6 #6 Satin Steel™ BB21B #41 Round 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.