The Pro 6" Speed Ring Insert for Norman Lights from FotodioX is a spare or replacement part for Pro Studio Solution EZ-Pro Softboxes, Deep EZ-Pro Parabolic Softboxes, EZ-Pro Beauty Dishes, FotodioX Lantern Softboxes, Classic Softboxes (speed ring plate required), Classic Beauty Dishes, Foldable Softboxes, and other light modifiers. This model is compatible with the Norman BPN, LH500, LH2000, and LH2400.