The Omega Products ER11 Imperial Collet is a precision toolholding accessory designed for machinists and shop technicians who work with imperial-sized tooling. Sized for 3/16 inch tooling and compatible with ER11 collet chucks, it provides a secure grip and tight run-out to support accurate machining outcomes. With a stated 10-micron run-out, this collet helps maintain accuracy under load, reducing tool deflection and improving concentricity and finish quality across parts. 10-Micron Run-Out: Delivers exceptionally tight tool alignment with only 10 microns of run-out, helping preserve concentricity and finish quality even at high speeds. Imperial Size Compatibility with ER11: Specifically designed for imperial-sized tools and ER11 chucks, providing a secure, repeatable grip and quick tool changes in mixed-tool setups. Durable, Reliable Construction: Built to maintain accuracy across many jobs, delivering consistent performance and reduced downtime in busy shop environments. When paired with your ER11 chuck, this Omega collet keeps imperial tooling aligned, speeds up setup, and minimizes rework by maintaining tight tolerances. The result is more consistent part quality, faster production cycles, and greater confidence in every cut.