These are what we use in the training centre, there is quite a selection of them in the Harris cataloguethanks backpurge...
i not sure if i should just source another torch, one that has 8mm inlet..?
View attachment 137524
What about something like this.
https://www.ebay.co.uk/itm/Steel-FU...NNECTOR-MENDOR-REDUCER-REPAIRER-/270989034682
These are what we use in the training centre, there is quite a selection of them in the Harris catalogue