The Simple 1/2 inch Circular Optical Holder by Phylabs Company is a high-quality and practical product designed for holding small lenses. This holder features an optic diameter of 12.7mm and a maximum thickness of 5mm, making it suitable for various optical applications. The clear aperture of the holder is 11mm, and its optical height is 0.39 inches (10mm). The product includes a retaining ring (SM12RR) that enhances the stability and security of the lens. For installation and adjustment, suggested tools include the SPW205 or SPW801 spanner wrenches. Due to its simple and efficient design, this optical holder is ideal for use in laboratories, optical projects, and small imaging systems.