Rubber Dam Clamp #B4, Black Line PreviousNext Rubber Dam Clamp #B4, Black Line RDCMB4X 0.0 star rating Write a review The B4 clamp is ideal for use on anterior incisors and canines. 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.