The PolarPro Remote lock is compatible with both the DJI Mavic and DJI Spark controller. The Remote lock installs over the control thumb-sticks ensuring they are protected and do not move during transit. The Remote lock is constructed out of a durable and rigid glass filled nylon, with a rubber over-mold where the remote lock attaches to the thumb-sticks. The PolarPro Remote Lock ensures your remote arrives to your destination safely and ready to fly.