Imperial Allen keys

Rno

Hello,
was thinking of changing the big axle scews.

Anybody knows the allen key size for this one?

I've imported a set from UK but this one goes beyond!

Thanks
Arnaud

PS: Idea is to fit much longer ones, if they protrude they would wear instead of the nice blue frame when riding concrete.

Rno

Good forum :-)
Arnaud

sonny123

Not sure it's a good idea messing around with the main screws.
There are better ways to protect your frame.