Use to hold square or rectangular optics, such as square metal-coated mirrors or dielectric-coated mirrors and diffraction gratings.
| Optional for different heights, for example, square or rectangular optics with height of 12.7mm, 25.4mm and 50.8mm； |
| Tip/tilt adjustment range: ±4°； |
| The optics to be mounted should be more than 3.0mm thick. |
