Review on Universal VESA Mount Adapter Plate for TV Mounts - Convert 75x75, 100x100 📺 to 200x100, 200x200 mm VESA Patterns - Mount Plus 1056 - Includes Hardware Kit by Mike Wallace

The holes are precisely aligned and fit all points on 75mm, 100mm and 200mm I've tried. I tried it, it's much stronger than other extension models, for example with 4 crosses. It's a flat plate and the screws that attach it to the small side of the adapter go into countersinks to allow flush mounting on either side of the plate. It's not exactly universal, as it only includes two sizes of screens that can be mounted on the large side. I had to get some longer M6 screws to fit my TV. It includes some plastic washers that help if the bolts are too long, but they and the washers are designed to fit an M6 or M8 so they hang fairly loosely around the smaller diameter bolts.