The Zacuto Z-ZMCR Zicro Micro Mount is a single 15mm rod clamp that can be used to mount devices with a 1/4"-200 threaded mounting hole. Quickly mount, dismount or reposition with your accessory onto a 15mm rod. The Zicro Micro forms a small platform that incorporates a 15mm rod clamp and captive 1/4"-20 tie-down screw that lets you adjust the position of your device with a snug and secure fit. The rubber-tipped, removable catch hooks help hold your device and prevent it from twisting on the plate. The spring-loaded design allows you to tighten or loosen the integrated rod clamp without turnign the lever fully.