plenty of those burners on e-bay, I have used them and the adaptor on several models about 10mm x 0.75 but not.
The other adaptor in the photo is for an "easy-click" cansiter and the side not shown has the thread for the regulator.
EDIT, thread is 7/16" UNEF,canister spec EN417
Edited By JasonB on 10/12/2019 17:30:04