SmallRig 1943 Dual Rod Clamp is designed for 15mm rods and features a 60mm standard center. It can be attached to a cage or any plate with 1/4'' threaded holes. It could also lock 15mm rods, which are tightened via 2 locking levers. Thus, it provides a secure platform to attach accessories, such as lens support, matte box, battery plate and so on.