Quick Release Cool RailBlock 15mm DSLR Camera Shoulder Rig Accessories by SmallRig
Quickly and easily mount to and release from your rig's 15mm rods to provide 1/4"-20 mounting screws.It comes with RED standard 1/4"-20 thread, so you can also mount the QR-CoolBlock-15mm on the top of your RED cheeseplates, cages, battery plates, and more. Extremely versatile, compact, and lightweight.  It comes with ratchet wingnut.Weight: 87gNotes: we offer 4pcs standard 1/4"-20 screws for FREE as Gift if you want to mount it on your RED rig.