The CineMilled PRO Dovetail for DJI Ronin-M and MX is designed to replace the dovetail plate that comes with the gimbal to allow you to counterbalance front-heavy loads. It’s slightly longer and offers a series of 3/8"-16 threaded holes across the back that support optional CineMilled counterweights (CM-070 and CM-080), which are available in 1" and 2" sizes and are stackable. It’s also T-shaped so you can mount the weights offset in cases where that would better balance the camera.