The LH-1T-PK is a 10-pack of the Fixed Lens Mount. This cost-saving 10 pack is a convenient and economical solution for mounting thin Ø1.0 inch (25.4 mm) lenses and beamsplitters. The 0.25-in. (6.4-mm) thick lens mount consists of a threaded holder with a retaining ring to hold the optic firmly, but gently. The holder incorporates an 8-32 threaded mounting hole for post mounting on English SP and MSP Series posts. The front of the holder also has a special 6 mm alignment hole, which can be used with GR Series Guide Rods for fast alignment of several A-LINE™ lens mounts.