Monitor Hinge (ARCA Swiss) can attach into ARCA dovetail like the one found on a Wooden CameraRED KOMODO Top mount, which is sold separately. When combined withKOMODO Top Mount, system provides a direct -20 mount for SmallHD monitors. Included rubber pad can be added for attaching third party monitors. A 15mm mounting spud is included and allows monitor arm to be quick released and attached onto Wooden CameraTop Handle (ARCA Swiss) which is also sold separately. Compatible withSmallHD Smart 5 and Ultra 7 Monitors