This ballhead with NATO clamp is a component of SmallRig ballhead arms. Combined with Smallrig Ballhead Clamp 2134, it can work with other ballhead accessories like 2114, 2132, and 2108, to bring more custom configurations. It's perfect to fit accessories with NATO rails for quick release, like Top Plate 1853, Side Plate 1854, and camera & monitor cages like 1834/1726/1788. 1 x Ballhead with NATO Clamp 21331 x Hex SpannerProduct Dimensions: 40.5x25x50.5mmPackage Dimensions: 140*160*40mmNet Weight: 37gPackage Weight: 44gMaterial(s): Aluminum Alloy