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Product Details

Single Piece Ultimate Cut Countersink Type C with 90° Diameter ranging from 10.4mm-25.0mm from RUKO. Available in HSS High Speed Steel or HSSE-Co5 Cobalt.

Achieves the best performance in almost all materials and applications, considerably less feed force required. Up to 60% longer service life, up to 30% faster countersinking. Extremely quiet running, optimal and smooth surface, perfect chip removal. Extremely high wear resistance, applicable for normal and high-performance cutting. No material welding, perfect and smooth surface, extremely high nano-hardness.


Product Facts and Statistics

  • Up to 30% time savings with faster Countersinking
  • Twice as many Countersinks
  • Excellent, smooth Countersink Results
  • Up to 60% Longer Service Life
  • Perfect Chip Removal
  • Less Feed Force Required
  • Extremely Quiet Running Operation
  • Revolutionary Flute Geometry
  • Optimized Relief Grinding
  • 3-Surface Shank
  • Achieves the best performance in almost all materials and applications

Additional Information

The newly developed cutting geometry of the ULTIMATECUT enormously reduces the axial and radial forces, which are affecting the tool during the countersinking. The variably running relief grinding was specially developed and ensures a very quiet countersinking procedure and a perfect surface quality, which guarantees the best results. (The new RUnaTEC coating further increases performance). The specially developed flute parameters, such as the angle, the transition radius as well as the extra-wide chip flute, ensure an optimal chip and heat removal and therefore enable a high wear resistance. Furthermore, the new geometry prevents material welding and reduces the countersinking force. Considerably less feed power while countersinking is now necessary. The materials can be handled either with a very high as well as with a very low cutting speed, without loss of quality/loosing quality concerning the result. The ULTIMATECUT achieves the best performance in mostly all applications and materials!


MaterialHigh Speed Steel
Shank Diameter10.0mm
TypeForm C
ApplicationAll Purpose
Set SizeSingle Piece

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