The SmallRig Ball Head Clamp with ARRI Locating Pins & NATO Clamp Mount features two interchangeable ball head mounts secured to the Ball Head Clamp. A wingnut lever on top loosens and secures the clamp, which is designed with anti-slip pads and a cushion ring for a better grip. Individually or combined, all the components support up to 3.3 lb. Among a variety of other applications, the ARRI locating pins allow anti-twist attachment to camera cages and other supports, and the NATO clamp lets you mount monitor cages or other accessories that have a quick release NATO rail. Alternatively, various other optional SmallRig ball head mounts can be attached, such as the 2132 Ball Head with 1/4?-20 Screw and 2108 Extension Bar.