The Dynalite 7" Grid Set for SR65 Reflector is designed to further narrow the inherent 65° angle of coverage of Dynalite SR65 7" (17.8 cm) reflector (sold separately). The set contains 4 individual grids that snap easily into the front of the SR65 reflector to narrow the light down to 10, 20, 30, 40° angles of coverage without having to physically move the lightstand. The grids stack together neatly for storage and easy transport.