The dimension is a standard size for machine tables, such as the LAGUN GBM 31 or various sanding and milling machines . If you are looking for this software to run industrial equipment:
When searching for and installing specific driver strings like this: disksmwindowsx64jun2015version1120x510 new
The keyword likely refers to a specific driver or software update package released in June 2015 for 64-bit Windows systems. The dimension is a standard size for machine