Well I got it at a "trek" shop and according to them, they come in all sorts of sizes, way more than just 2.Intriguing. Know which one measures like that, they advertise a 22.5 and 30?
I'd consider one for a 25mm ex471.
With stans tape a mystery leak starts after a while with cushcore, seems to be the valve seal, was going to try new peatys valve to experiment.
Had gorilla move and stans makes install easier for me.