The mounts that attach the LumeCube for the Inspire are a clamp style and should work for the H920. The tubes on H920 are 21mm and the Inspire are 22mm. If they were too loose, all you’d need is a small strip of shim stock; piece of inner tube or bicycle shops have various thickness rubber strips for various clamps. LumeCube | Portable, Durable, Powerful Lights for Photo and Video
I didn’t realize the LumeCubes could be controlled by Bluetooth. Able to remotely turn On/Off and adjust 10 levels: 150-1500 Lumens.