Overhauling a Trumpet Lever Waterkey

[@loctite222ms]

@ledderzed It's threaded. I use a 1/4 inch socket or nut driver. A smooth jaw pliers will work if you're careful.

[@ledderzed]

Can i assume that the Hexagonal pin on a bach strad require a tiny spanner? or do you whack it out?

[@Lengsel7]

Thanks for the info.

[@WongKaiYi]

Are there Euphonium water keys for sale?