Profile: Sendoline® manufactures and markets root canal instruments. Our products include The NiTi S-Files®, NiTi K-files, NiTi K-reamers, NiTi H-files, S-files, K-files, K-reamers & H-files. Our NiTi K-file is designed in a tight spiral that has four cutting edges with a 60° tip. Its great flexibility & good cutting ability makes it safe to use. The NiTi S-Files® has a cylindrical core design which provides good flexibility and excellent debris transportation, while at the same time the double cutting edges provide great cutting ability. The unique spiral design flutes successively increase in depth and length from tip to handle & double flutes at the 90° non-cutting tip makes the instrument efficient but yet safe to use.