Include this script into your page along with the iframe for a responsive media embed
With more mounting slots predrilled on the plate, users can slightly adjust the spacing between tube rings, thus having much more possible mounting options. The mounting holes also meet quite more needs of offer much more potential connections. And there are half-threaded holes tapped close to the edge of width. When you put four screws from the bottom, the screws will prevent the dovetail plate from slipping away when placed on an EQ mount.