The Ocf Ii Barndoor is a compact and portable light shaping tool made for creative photographers on the go. The durable Profoto rubber collar mount together with the strong and durable metal clasp, attach safely and easily onto any Profoto Off-Camera (OCF) flash.The four barndoors are individually adjustable so that you can flag your light spread with precision. The OCF Ii Barndoor can also be easily combined with the colorful OCF Ii Gels if you want to adjust or add color to your light..