The Xeno TW15 diffuser fits
Xeno e03's obviously ....but not that many other lights .
If you know what else it fits feel free to list it here .
1 Xeno E03
2 Fenix PD 22 and LD 22 Fenix
3 Leatherman LGX 200 (made by Fenix)
4 Brass Beauty 18650 light from Cnqualitygoods
that's all I've found so far ...
just trying to stop the diffusion confusion