Hive Lighting CX/C-Series Quad Bracket C-Series Double Bracket for using four 100mm Profoto compatible fixtures in tandem. Inside the Box: C-Series Double Bracket Mounts 4 C-Series Lights Together 5/8″ Receiver The C-Series Quad Bracket from HIVE LIGHTING allows four Bee 50-C, Wasp 100-C, or Hornet 200-C LED lights to be mounted together in any combination within the aluminum frame with 5/8″ receiver.