Kerr Hedstrom Files are ground from Stainless Steel wire. The flute depth increases with the taper, creating a sharper, more flexible instrument.

The strongest of the hand files bypassing obstructions with far greater ease, K-files for endodontics are produced to give the operator a smooth tactile sense inside the canal during instrumentation. K-files are available in 45 different sizes as listed below. Multi-packs are available.