Novatron bare tube heads and Monolights have the wonderful versatility of having their light modified in multiple ways. Reflectors 2032 and 2034 can be attached to these Novatron lighting instruments. Please be sure that everything that you do with your lighting gear is safe and secure. If one of the knobs is lost, please replace it right away. Be extra safe. Get a total of four of these knobs for each of these lighting instruments that you have.