The 9814-8-Ni-K-V Vacuum Compatible Stability Series Top Actuated Mirror Mount builds upon the New Focus™ tradition of manufacturing outstanding kinematic mounts that use the best Hex-key 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 8.0 mm thick mirrors providing further performance enhancement. 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 top-actuated version is vacuum compatible to 10-6 Torr and has all adjustments accessed along the top, is ideal for use in compact spaces where access is limited.