... dental k file CE approved fast shipping , best service 6pcs/ box,4 types length exported to more than 50 countries dental k files ... NiTi K-filesStrong and extremely flexibleDiamond-shaped cross sectionHand Use Silicone ... to a box, Assorted package 15-40, 45-80InstrumentSizeColour DesignationNiTi K-Files 8 Grey 10 Purple 15 White 20 Yellow 25 ...