Featuring a clamping-style lock, this Stroboframe 300-SHO flash mount securely holds the heaviest shoe-type flash units. It will not loosen up even under the most rigorous use, and a locating pin ensures that it won"t twist on the bracket. This bracket shoe mount attaches with the bracket"s mounting knob. Constructed of machined, solid aluminum.This flash mount can be used with Stroboframe VH, RL & System 2000 Brackets.