The Zacuto Z-ESRR Rod Riser for Scarlet and Epic Cameras is for use with the C300 Studio Baseplate. It attaches to the front of the C300 Studio Baseplate via two Allen screws. This riser allows you to use the Studio Baseplate with a Scarlet or Epic and add a follow focus and matte box. The Studio Baseplate is a flat, light platform with rods running through the plate, plus a rod port on each side. It is an easily adaptable, elegant solution for the C300 and now the Scarlet and Epic too. The Rod Riser for Scarlet and Epic Cameras comes with two 4.5" female/female front quick releasable rods.