This Profoto Stand Adapter Pro is a replacement part for the one that comes with the Pro-D3 monolight. It allows the flash head to be mounted on a light stand with an industry-standard 5/8" stud. This redesigned stand adapter comes with a central umbrella mount and a new rosette knob, allowing you to add an optional umbrella and safely support the light. It is also compatible with the brand's Fresnel Small.