Omega Products HSK63F ER Collet Chucks are precision toolholders built for high-speed CNC milling. With an HSK63F shank, they deliver exceptional rigidity and accuracy in demanding machining tasks. The G2.5 runout minimizes tool deflection and vibration, while the ER25 system accepts a wide range of tool diameters, all in a compact 75 mm gauge-length design for stable, balanced cutting at speeds up to 25,000 RPM. Ultra-low runout for precision: G2.5 runout minimizes deflection and vibration to deliver tighter tolerances, smoother surfaces, and longer tool life at speeds up to 25,000 RPM. Rigid HSK63F interface: High rigidity and accurate alignment reduce chatter and improve surface finish in tough materials and demanding milling operations. Wide ER25 tool-range compatibility: Clamps a broad range of tool diameters securely, enabling flexible setups and faster changes without swapping holders. This combination of rigidity, versatile clamping, and high-speed capability helps you streamline setups, reduce downtime, and consistently achieve tight tolerances and smooth finishes across a broad range of materials and applications.