The SmallRig Articulating Arm 2070B comes with a ballhead (1/4’’ Screw) on each end to expand more mounting possibilities for different shooting scenarios as per your needs. A single wingnut is applied to lock the double ballhead tight directly, and thumb screws on both ends are utilized to lock the devices manually. A spare hex spanner is included to lock it tighter if necessary. Maximum load is 1.5kg.