Phil Sayers
Very well known Exeweb poster
If Ukraine can manufacture these in quantity and can make them reasonably accurate they will be able to attack thousands of targets (including in large swathes of Russia should Ukraine choose to do so) that are presently out of range. A 75 Kg warhead is not to be sniffed at; that is not far short of the warhead on a HIMARS rocket and those can gut or collapse buildings with one hit: