The Profoto OCF II Grid 20 Degree makes it easy to focus and control the light coming from a Profoto off camera flash (OCF). Lower degrees indicate a tighter light pattern, with less spill onto surrounding areas. The OCF II Grids all attach via integrated magnetic mounts onto the OCF II Grid & Gel Holder or the OCF II Barndoor, and are easily stackable with the OCF II Gels.