Omega Products DIN2080 ISO40 End Mill Holder - M16 Thread - 15,000RPM - G6.3 - 12mm - 100mm Gauge LengthThese holders adhere to the DIN2080 standard, ensuring compatibility and interchangeability with other ISO40 tooling systems. With a maximum speed rating of 15,000 RPM, these end mill holders are well suited for high speed machining applications. The G6. 3 balancing grade ensures optimal balance and stability, reducing vibration and enhancing cutting precision. The holders are precision engineered to provide a secure and rigid grip on the end mill,