This is the housing only for upgrade from the original FL-35 Fresnel lens to the new FL-35YK
You will have to remove the Fresnel glass from your original FL-35 and instal it into the FL-35YK Housing
Instructions can be found here : https://youtu.be/EpkIQ6eHrmw
The specially designed Fresnel with NL Mount, is compatible with the Evoke 1200 series. With a new centre-mounted yoke offers a more balanced orientation plus a non-rosette locking hinge allowing for a smooth tilt movement. Illuminance level boosted to 49940lux@3 m 5600K when attached with the Fresnel focusable from 11°-45°, providing an excellent Hollywood level hard light solution.