LumiQuest Snoot XTR for Portable Flash can give you a very narrow 10° beam of light. With the included telescoping extender, you can achieve a 5° beam. Automatic exposure operation will be affected, so testing is suggested if you plan on using automatic exposure functions. The snoot folds flat to 5.75 x 7.25" (14.6 x 18.4 cm). Touch-tab fasteners for attaching the snoot to a flash are not included--the LumiQuest UltraStrap (B&H #LUUS) non-adhesive touch-tab fastener will secure any LumiQuest to your flash and is available separately.