Designed as a smartphone clamp rig for professionals, the Beastclamp Rig from Beastgrip features durable anodized-aluminum construction with a rail slider, two built-in cold shoe mounts, and five 1/4"-20 threaded mounts. For greater flexibility and customization, an accessories extension bar is included, which features two additional cold shoe mounts and five 1/4"-20 mounts, allowing for greater flexibility and customization. With a plethora of accessory mounting options, you'll be able to add LED lights, microphones, tripods, and more. Also included are two handles, which will help to better stabilize the rig when shooting hand held.