Three 1/4 male screw port, 1/4 female screw port, can be mounted on a variety of camera accessories use Suitable for 1/4 threas DSLR cameras, sports cameras, filling lights, cellphone clip, tablet clip Enhances your production with this essential tool that promises durability and precisely Desktop C-clamp multifunctional vigorously clip fixed fill light camera accessories Aluminum, can be clamped on the top of products from 0mm to 60mm thick