This is a dedicated 19° interchangeable lens for the Nanlite Forza Projector with FM Mount (which is sold separately). It provides a tighter beam and produces the brightest possible light from the Forza 60B, 60, and 150 LED monologhts. While the additional output is a huge bonus, the biggest benefits are the endless creative possibilities it provides. The Ultimate Light Shaping Tool Lighting a shoot is incredibly creative to begin with, but when you add the Nanlite Forza Projector with FM Mount and this lens, the potential is unmatched. Create eye-catching textured backgrounds, razor-sharp spot effects, and anything else you can dream up. Dramatically Increases Light Output The 19° lens provides up to 17 times brighter output than the light only, it's 3 times brighter than the light with the reflector, and 1.4 times brighter than the light with the FL-11 fresnel. Durable, Heat-Dissapating Nylon Construction The lenses and projector mount feature a durable nylon construction that both stands up to the rigors of production work, and quickly dissipates heat so you can handle them without worry. Swapping Lenses is Easy Removing the current projector lens and swapping it for another is accomplished by removing a single screw. It only takes a few seconds and doesn't require any tools. Fits Inside the Nanlite Forza Projector Case The case that comes with the Nanlite Forza Projector with FM Mount (which is required for use) has a free slot that can hold this lens.