RD5 PWR Piezo Tip RD5 PWR Piezo Tip UPRD5 The RD5 PWR Endo Retro Piezo Tip helps with minimally invasive retrograde root canal preparation. The tips’ thin and 90° angled structure allows a conservative cut through a minimum-width bone window. 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.