The higher mounting brackets for the Katame allow the installer to bypass the traverse/beam or support frame of the desk. Making sure the CPU holder can be mounted in the exact spot you need it to be. - Bypasses the desk frame/traverse/cross beam - Let's you install the Katame freely under the desktop - Suitable for both large and small Katame models - Made of recycled ABS - Easy to install - Max. weight capacity of 30kg