This servo bracket is made of 3 mm MDF wood. By using wood, the bracket is not only affordable, but also durable and easy to assemble. The bracket is strong enough to mount and operate the HXT900, TG9d and Tg9e servo under your layout. You can adjust the servo in height as desired.
To mount the bracket, you can screw the servo bracket onto your layout using the two round holes in the base plate. Moreover, the advantage of wood is that you can also glue the bracket where screwing is not possible.
You can easily assemble the kit of the bracket with wood glue. For mounting the servo in the bracket and the bracket on your layout, I recommend 2.9x9.5 sheet metal screws. This thickness works fine and the use of wood gives you a strong and sturdy whole.