Premium Material: The camera mount adapter plates is made of premium PVC material. The middle anti-twist locking screw is made of aluminum material. The surface is finely oxidized, durable and strong. With standard 1/ 4 inch screw, and the screws on the quick release mount bottom could help you install faster. | Due to a little batch of Ambico fluid head tripod V-055* tripods with a manufacturing specification that was off slightly. The easy fix is to to file off / sand off a tiny bit of the base of the plate (on the 2 beveled sides, not the straight sides), or alternately do this to the tripod opening where the plate goes. By removing just the slightest amount of plastic, it would fit into the tripod head and work great. | Easy to Install: According to the card position of the Pan/ Tilt/ Zoom, you could insert the mount quick release plates directly for installation. You could adjust the slotted screw with your fingers or tools. The quick release tripod mount adapter could be fixed to the camera base, facilitate the installation and disassembling of the tripod, save time and easy to use.With standard 1/ 4 inch screw, and the screws on the quick release mount bottom could help you install faster. | Compatibilty: Compatible with Ambico V-0550 V-0551 V-0552 V-0553 fluid type head only(Has bubble level on tripod head), Sunpak 7500 Pro 7500tm 7575, Kalimar Pro-Tech V-40 etc.Please measure your Ambico tripod head, see descriptions for example of correct tripod and the measurements. This is for the FLUID TYPE HEAD ONLY (Does not fit the Non-Fluid Head). | Size details: Base Size is 1 5/8"(41 x 41mm square).The tapered square base that fits into the tripod base is 1-5/8" x 1-5/8" (41mm x 41mm) dimensions on the bottom (that fits inside the opening in the mount head of the tripod). Has 1/4 inch Camera Mounting Screw that fits most cameras and camcorders and cell phone tripod adapters.