K-files have a rhombic cross-section, weak rotary cutting, tight thread spacing, and large cross-sectional area. They are mainly used to remove the dentine of the root canal wall and dredge the root canal.
Extremely strong, flexible and durable for searching root canal, cleaning and shaping the canal walls.
Designed to clean out the dentin and make root canals smooth.
To give operators a smooth tactile sense inside the root canal.
PIUMA K-File Stainless steel, Flex,  color coded  is the strongest of the handfiles with less separation potential. K-Files can bypass obstructions with far greater ease. They are designed to provide a smooth tactile feel during instrumentation.