ProUltra® SINE® Access Refinement Tips Move cursor over image to zoom Achieve safe, fast and precise refinement during endodontic access procedures with SINE Access Refinement Tips. Designed by Clifford J. Ruddle, D.D.S., these innovative instruments offer precise and efficient ultrasonic technology for multiple applications. Six innovative tip configurations Double composite diamond coating Optional water delivery system Contra-angle design for better access and visibility All tips are 18 mm working length The ProUltra SINE System with tips and booster is also available for purchase