RUKO ULTIMATECUT Conical Countersink, HSS, Ø 20.5 mm, DIN 355, 90°.

The RUKO ULTIMATECUT 4S tapered countersink, model Ruko-102881P, is a high-precision tool designed to deliver superior performance when countersinking various materials. With its innovative four-edge design, this countersink optimizes force distribution, resulting in smooth and efficient operation. Advanced technology allows for countersinking up to 40 mm in diameter, even with hand tools, ensuring a flawless countersinking pattern without vibration marks.

The ULTIMATECUT 4S not only provides time savings of up to 50%, but also extends tool life up to three times longer compared to conventional countersinks.

The RUnaTEC coating, developed in-house by RUKO, further enhances the tool's performance, especially on demanding materials such as heat-treated steel, offering effective penetration and superior wear resistance.

• Number of cutting edges: 4
• Coating: RUnaTEC
• Hold surface: 3-way spindle
• Cutting direction: right-hand
• Material: HSS
• DIN: 335
• Countersink angle: 90°
• Main application: Steel 900 N/mm², Steel 1100 N/mm², Aluminum, Plastic
• Other applications: Bronze, Cast Iron