The 3-Tier Mantis Studio Brackets pair lets you connect three Mantis together in a robust and elegant solution. This setup is fixed and is recommended mainly for studio use. The brackets are cut precisely by laser from a sturdy metal and then coated twice for a nice smooth finish that matches the Mantis light gray color. They come with twenty screws and special washers that help hold the screw in place during assembly and keep a tiny gap between the brackets and the Mantis. Installation is fairly simple and takes about 30 minutes to complete.