This Kern Switar 25mm f/1.4 H16 RX cine lens is perfect for Bolex 16mm cameras. It has a manual focus type and a screw mount for easy installation. The lens has a maximum aperture of f/1.4, allowing for great low-light shots. The brand, Kern, is known for their high-quality lenses and this one is no exception. The lens is ideal for those looking for a cine lens with a focal length of 25mm. It is compatible with Bolex 16mm cameras and is ready to use. This item falls under the categories of Lenses, Lenses & Filters, and Cameras & Photo. Get ready to take your photography to the next level with this amazing lens.