The Simple 2-inch Optical Holder by Phylabs Company is a practical tool for holding and adjusting optical components in various optical systems. Designed with a 12.7 mm optic diameter and a maximum thickness of 5 mm, this holder is versatile and suitable for a wide range of applications. The clear aperture of 11 mm allows light to pass through with minimal obstruction. The optical height of the holder is 10 mm (0.39 inches), and it comes with an included retaining ring (SM12RR). For installation and adjustment, the use of SPW205 or SPW801 spanner wrenches is recommended. Thanks to its simple and efficient design, this product is an ideal choice for laboratories and optical projects.