Thorlabs offers five styles of clear edge mirror mount. Our Ø1/2" clear-quadrant mounts are rear-loaded and secure the optic with a top-located setscrew. We also offer Ø1" and Ø2" clear-edge mirror mounts with 180° of clear edge and an optic retention method designed to minimize optic distortion. To further reduce optic distortion and increase stability, we offer a Ø1" Polaris glue-in mirror mount that has a 142° clear edge. In addition, mirror mounts designed for using D-shaped mirrors to pick off beams are also available. Finally, a pitch-adjustable flexure mount that has 120° of clear edge is offered.