This is an Elinchrom Honeycomb Grid Set consisting of an Elinchrom 8.25" diameter EL 26141 standard reflector, which fits all Elinchrom flash heads and monolights, and 4 honeycomb grids that fasten to the front of the reflector. The kit comes with a barndoor adapter that will only fit this reflector, not the 65° version of it.
Each grid produces its own narrow field spread of light of 8, 12, 20, or 30°.
Grids are essential accessories for any lighting system. Consider a grid as a painter would a brush or a sculptor would a knife or chisel. Suggested uses include hair lighting, background lighting, or product highlighting.