Developed for RED’s second-generation rail components (and backward compatible with the RED ONE®), the new DSMC® Universal Mount uses 2x captured 1/4-20 screws to bolt to the RED ONE Riser or RED® Quick Release Platform [Dovetail]. This product locks onto your 15mm offset or 19mm studio rail system using 2x ratcheting wing nuts. In addition, there are (4) threaded 1/4-20s holes on top for adding additional accessories.