The LH-0.25 Fixed Lens Mount is a convenient and economical solution for mounting 1/4 inch (6.35 mm) lenses and beamsplitters. The lens mount consists of a threaded holder with a Delrin retaining ring to hold the optic firmly, but gently. The holder incorporates 8-32 and M4 threaded mounting holes for post mounting on both English and Metric SP and MSP Series posts. The front of the holder also has two clearance holes, which can be used for face mounting or used with a threaded rod to form low-cost lens systems (not supplied).