Neewer 3-in-1 Octagonal Hot Shoe Mount Bracket for Camera, Speedlite, Flash, Umbrella, Light Stand, Tripod, Reflector, Wireless trigger Uses special octagonal design, which is durable and sturdy. Only needs a trigger to control 3 speedlites with wireless trigger at the same time. Add a mount for trigger, which is convenient for using the trigger. Can be installed on the light stand or the quick release plate on the tripod. Compact with most kinds of the triggers, use 3.5mm standard socket. Note: the umbrella and speedlites are not included!