The LBTEK Coaxial Beam Splitter Cube Mount CM-3 is commonly used for mounting polarizing beam splitter cubes and non-polarizing beam splitter cubes, and can also be used for mounting right-angle prisms. Featuring a cubic structure, it is side-compatible with 30 mm coaxial systems and has an SM1-threaded through-hole at the center. The bottom M4 threaded hole allows connection to optical posts. The product model is engraved on the top along with a white frame, where installed product information can be written in pencil for ease of identification. It can directly mount 25.4 mm beam splitter cubes while ensuring the center of the beam splitter cube aligns with the center of the SM1 threaded hole. The beam splitter cube adapter ensures that the centers of mounted 5 mm, 10 mm, 12.7 mm, and 20 mm beam splitter cubes align with the center of the SM1 threaded hole. The included base plate features a step for installation positioning, and the triangular clamp secures the beam splitter cube or adapter to the base plate. The velvet cloth attached beneath the triangular clamp protects optical components while increasing friction to prevent mounted optics from slipping. Note: Avoid excessive tightening force on the clamp screws to prevent damage to optical elements.