GP3 Root Canal Spreader GP3 Root Canal Spreader RCSGP3 .25 mm Root Canal Spreader is used to compact filling material during lateral condensation. 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.