25x3 Dave same as first one i made. 1/2" BSP threads.

All mine hand made one offs were individually tested, Saun will know that at 6300 psi it sheared a rated 10000 psi grease gun 1/8"BSP nipple.

Those that say its up to the individual whether to use or not is irrelevant, its the manufacturer for not designing and producing correctly saving 10p on a tube and 1/4Lb in weight!
How many have even done a single test, destructive or otherwise yet alone test every cylinder and bought in the thousands!

Seen plenty of bad designs over the years, tube it self may have been strong enough but how the valves attached is a different matter. I could real a load straight off from UK, US and chinky. More importantly its a danger to others around not the users!
We wont mention the QF conversions threaded into Luxfer bottles, thats the mentality and exactly same principles apply to all above.