Maybe a imperfection when being made and gradually deteriorates and cracks then the tip comes off like it did do, or being dropped in transit may cause them to be damaged and do the same over time
maybe a tongs ct9 or some vf series i'm unsure yet...I was looking at the side mount gtx2863r kit zisco has for sale but I think that'll be a bit laggy for me haha, and it would never see it's full potential on 4efe engine anyway, 0.5/0.6 bar :/
Mines got the plastic "grab" bit inside so not just a normal socket I don't understand what part inside that socket is 10mm.....It's a 16mm socket with a plastic insert, so should be (and is in some cases) marked as 16mm...
It's 16mm...that is some chinese fucked up socket they probably printed the wrong size I'll go out and put one in my 16mm spark plug socket...1 sec i'll upload a pic