SmallRig Magic Arm with Dual Ball Heads (1/4"-20 and 3/8"-16 ARRI Locating Screws) 4.7" Arm with 2 Ball Heads, 12 lb Load Capacity, 1/4"-20 Screw on One End, 3/8"-16 ARRI Accessory Mount on One End, For Monitors, Viewfinders, Lights & More, Durable...