The RUKO tapered countersink achieves outstanding performance in almost all materials and applications due to its unique cutting geometry, specially developed variable back taper, transition radii, and extra-wide flute. It requires significantly less feed force, tool life is up to 60% longer, and countersinking is up to 30% faster. The tapered countersink operates extremely smoothly, providing an optimal sink pattern and ideal chip removal.

HSS Co 5 is a high-performance high-speed steel with a 5% cobalt content, offering high toughness and heat resistance. It is suitable for drilling in difficult-to-machine materials with a strength of up to 1100 N/mm².

RUKO Nano Technology ensures extremely high wear resistance and hot hardness, making the tapered countersink suitable for both standard and high-performance machining. There are no material welds, and the surface remains optimal and smooth with extremely high nano-hardness.