The length is only 16mm and suitable for deciduous teeth preparation.
The standardized taper with obturation by standard gutta purcha point.
Enable creation of a smooth glide path and determine the working length by hand used k file #10.
Use MM file .04 taper #20, #25 and #30 to finish the preparation.
Attention: the root canal wall of the deciduous teeth is very thin, no need to cut too much.