The 9817-6-Ni-K Stability Series Center Mirror Mount builds upon the New Focus™ tradition of manufacturing outstanding kinematic mounts that use the best Hex-hey actuated adjustment screws and sapphire seats. This Nickel plated 1.0 inch (25.4 mm) diameter mount has a unique retention system for up to 6.35 mm thick mirrors that provides further performance enhancements. Designed originally for precision UV beamsteering applications in the demanding UV semiconductor capital-equipment industry, the retention system optimizes stability while minimizing wavefront distortion, ensuring that the mirrors are truly flat and rock solid. Mirror installation and removal is simple and fast, requiring no adhesives. This center mount has a OEM frame with two 8-32 (M4) clearance mounting holes making it ideal for use in compact spaces where access is limited. Additionally, it is certified for cleanroom environments up to ISO Class 7, making it ideal for high-precision applications where contamination control is crucial.