SmallRig Articulating Arm with Dual Ball Heads (1/4”-20 screw) 2070 can be used to mount an accessory on your camera rig firmly and flexibly. Both ends of the arm feature a 1/4"-20 screw and a tightening thumbwheel for easy accessory mounting, with rubber pads protecting the equipment from scuffing. Use the included small hex key to further tighten the thumbwheel if the heavy device is attached. Both ball heads are secured using the single, large thumb lever. Compatible with a wide range of devices such as field monitor, LED light, sound gear, etc., this arm has a load capacity of up to 5 kg/11 lb. It is interchangeable with other SmallRig ball head parts such as 2132, 2133, 2134, 2211, 2114, 2108 and BUM2383 for differenct mounting configurations.