Diffuser for Sofrin SP70

I’m looking for a diffuser for my SP70 … anything currently available?

What is the size of the head (Diameter) in millimeters?

Bezel OD is approximately 90mm.

id love to know what you figure out.

Following

Ever get one of those bug-lights from/through vipon? Squishy dome is, uhh, “a little longer than” an 18650. Maybe 80something, but might stretch somewhat.

(No ruler handy right now.)