The Fotodiox Universal Gobo Image Projection Attachment allows you to project unfocused or sharply focused gobo slide patterns or an optical spot of various size using the built-in iris ideal for precise and selective lighting of a subject Bowens & Compatible Lights - Popular models include Bowens Gemini Calumet Travelite Interfit (S1 Stellar X XD Stellar Extreme Venus) JTL (Versalight-D & E) Neewer (DS & GS) Savage (FT-150) Westcott (Skylux Strobelite Plus) Flashpoint I Impact brand (VC VS & VSD) Photoflex Rime Lite Please Note Works best on monolights that are focusable such as the Popspot Ultra style of lights All pictures are for illustration purposes only Actual product may vary slightly due to ongoing improvements in design