And a big allen-key.
R..
As I found out to my cost after moving from Yoke to DIN the tank inserts have different size Hex so you need a Hex key set
I travel with with the yoke set that was taken off my regs at the conversion so if needs must I can change back for the duration of the trip
however Diver0001.... Talking of plagues, has this stupid different size EN DIN specifically for EAN actually taken off in Europe? If it has how would that affect a diver travelling to Europe with Yoke or standard DIN wanting to dive EAN?