Darkroom & Studio Photographic Equipment
Heat-Resistant Flash Tube Protection Clear Glass Dome For STORM III & Godox QT III Series Flash Strobe Photography Lighting Units
It protects the delicate flash tube from damage during set-up or transportation.
https://www.bizrate.co.uk/photography_darkroomequipment/heat-resistant-flash-tube-protection-clear-oid26529870372.html
