This one?
That looks an awful lot like a rebranded...something. I'm not sure exactly what, but it's probably an exact copy of something with a more recognizable brand name. If you can figure out what it's a copy of, you
might be able to find a replacement glass for that one, and if you do, then it
might fit this copy.
Even if you can't find a replacement glass, you
probably don't need to replace the whole kit. If that is indeed what you have, in the picture, then it looks to have a standard 510 atomizer connection, which means the bottom "battery" portion should be able to work with just about any modern tank/atomizer attachment you'd care to put on it (some of them will require higher power than that device is capable of outputting, though. Make sure you don't get something that's designed for 100 watts if your device can only crank out 40.) You might even find one you like even more than what came with the kit. If there's a local vape shop you can bring it in to, they can probably help you select one that will be compatible.