The SmallRig 15mm Rod Clamp with Cold Shoe enables you to attach 15mm rod accessories to your DSLR cameras. It allows you to convert cold shoe mounts to a single rod clamp. With one 15mm rod, you can attach monitors, an EVF, and other accessories. One locking ratchet lever tightens the rod clamp and cold shoe mount. The body of the rod clamp comes with two 1/4"-20 threaded holes for attaching additional accessories.