The Impact 7" Grid Set (10/20/30/40 Degree) helps you control your light more precisely. This set of 4 honeycomb grids, which fit any standard 7" grid reflector (other than Broncolor or Profoto), gives you a choice of a 10°, 20°, 30°, or 40° beam of light, to match your specific needs, perfect for an accent light or spot. A tension spring can stretch or arch to fit the reflector.The Impact 7" Grid (10 Degree) helps you control your light more precisely: this honeycomb grid, which will fit any standard 7" grid reflector (other than Broncolor or Profoto), gives you a very narrow 10° beam of light, perfect for an accent light or spot. A tension spring can stretch or arch to fit the reflector.The Impact 7" Grid (20 Degree) helps you control your light more precisely: this honeycomb grid, which will fit any standard 7" grid reflector (other than Broncolor or Profoto), gives you a very narrow 20° beam of light, perfect for an accent light or spot. A tension spring can stretch or arch to fit the reflector. The Impact 7" Grid (30 Degree) helps you control your light more precisely: this honeycomb grid, which will fit any standard 7" grid reflector (other than Broncolor or Profoto), gives you a narrow 30° beam of light, perfect for an accent light or spot. A tension spring can stretch or arch to fit the reflector. The Impact 7" Grid (40 Degree) helps you control your light more precisely: this honeycomb grid, which will fit any standard 7" grid reflector (other than Broncolor or Profoto), gives you a 40° beam of light, perfect for an accent light or spot. A tension spring can stretch or arch to fit the reflector.This Impact 7" Grid Set (10/20/30/40 Degree) includes: Impact 7" Grid (10 Degree) Impact 7" Grid (20 Degree) Impact 7" Grid (30 Degree) Impact 7" Grid (40 Degree)