MagMod Speedring for PCB With a MagBox Speedring Adapter for your Bowens, Paul C. Buff, Elinchrom or Profoto strobe, your softbox becomes a super versatile soft light source—and a crazy good investment for your photography business. Our durable, powder-coated speedring adapters set up and tear down in less than 1 second so you can switch between speedlights and strobes with ease.