K file available in stainless steel and nickel-titanium.
Stainless steel files are not elastic, while nickel-titanium files are flexible and are more suitable for curved root canals .
Stainless steel files have more cutting force, but less breaking resistance. Compared with the NITI files is easy to break, and NITI files is not easy to break, which is safer. However, the cutting force of nickel-titanium files is weaker and less efficient than stainless steel files.
Our NITI hand file’s handle has the word “NITi” printed on them.