The rod clamp could be attached to the top handle, plate and cage working with DSLRs such as GH5, Emos100, 5DMarkIII and so on directly with two 1/4"-20 screws for rod extension. It features a 15mm rod port and an integrated NATO railk, compatible with any 15mm rod and NATO style accessory. The spring-loaded rechet knob is used for quick lock. Net Weight: 52g Package Included: 1x Rod Clamp.