This is a mount to fit an Elecrow RC0505S 5" LCD screen to a Logitech G29/920. It should fit the G25/27 as well if they haven't changed the distance between the mounting clamps between models. As long as they're approx 210mm centre to centre it should fit.

The side arms require (6) M3x10 bolts, the rear cover uses (4) M3x6 and the screen also uses (4) M3x6.
 

You also need a 90 degree HDMI adaptor. I've included a picture of the correct one, make sure you get one with the right orientation for the plug side so the HDMI cable is facing backwards.

The screen is available on AliExpress usually for around £40. 
More info on it here:

[https://www.elecrow.com/rc050s-hdmi-5-inch-800x480-capacitive-touch-monitor-built-in-speaker-with-backlight-control.html](https://www.elecrow.com/rc050s-hdmi-5-inch-800x480-capacitive-touch-monitor-built-in-speaker-with-backlight-control.html)