This mounting method has been designed around a particular set of straps that you can purchase from Keyguard AT on this web page .
To add support for screw-on straps to your keyguard, you simply expand the “Mounting Method” category of options and then select “Screw-on Straps” in the pull-down list of titled”mount keyguard with” . You can see a video of the process by clicking on the image below.
The video below shows how to install the screw-on straps: