Profoto HR Speedring
The Profoto HR Speedring is heat-resistant and designed specifically for Profoto flashes and strobes, though its diameter fits many other brands of strobe (experiment at your own risk). Speedrings are paired with rod-based softboxes, octaboxes, and other light modifiers to be mounted on the front of your flash/strobe to soften and shape the light to taste. To use, simply line the rods of your softbox (not included) to the pegs of the speedring like building a tent. Then, put the strobe and speedring together and lock down.
There is no manual for this product.