Ruko Countersink set 90 ° ULTIMATECUT 4S 6.3-20.5 mm HSS-Co5 6-piece plastic case

6-piece Ultimatecut countersink set 4S DIN 335 90° Ø 6.3 - 8.3 - 10.4 - 12.4 - 16.5 - 20.5 mm. The Ultimatecut 4S countersink made of HSSE-Co5 offers a longer tool life for faster work results. The newly developed Ultimatecut 4S countersink operates with four cutting edges instead of three. The distribution of forces across the four cutting edges significantly reduces axial and radial forces, ensuring an extremely smooth and material-friendly operation of the tool due to the unequal division. This means that the new Ultimatecut 4S not only provides a perfect countersink profile without chatter marks but also allows for particularly energy-efficient and material-saving work, achieving up to 50% time savings and up to three times longer tool life. Another advantage: For the first time, the newly developed cutting edge technology enables countersinking with diameters of up to 40 mm using handheld screw and drilling tools. The new Ultimatecut 4S countersink works equally precisely in pillar drilling machines as well as in CNC-controlled machining centers. The new Ultimatecut 4S features a standard 3-flat shank that prevents slipping in the drill chuck and ensures consistently optimal power transmission during the work process.