The Flashpoint Speed Adapter is a locking convertor that fits atop any light stand with a 5/8" top stud post, and will allow vertical or horizontal mounting of any light, flash, or camera that has a 3/8" threaded receptor. The adapter has a 3/8" mounting thread with a locking nut to secure the item on top. Keep this adapter attached to several flashes or other objects to quickly set up on lightstands.