Ulanzi R011a Crab Clamp
*Fits All Surfaces
*Universal Threaded Holes
*24~60mm Clamp Width
*Compact & FoldableSecure and Stable GripWith an adjustable jaw opening, this clamp can firmly grip either around and flat surfaces perfectly, providing assured stability 1/4" & 3/8" Threaded HoleUniversal for NATO rail with four 1/4" and 3/8" Arri locating holes, making certain very safe fit with anti-off pin~60mm Clamp WidthIndependent locking knob allows for adjustment of the jaw opening, with a non-slip rubber cushion to ensure safe grip & Portable DesignLightweight and compact sufficient for your on-the-go shooting tasks Alloy + Stainless SteelWeight171g±5gDimensions111*77mm+2mmClamp Width24~60mm*Manually measured weight and length is probably not correct