A machined delrin insert that fits into the High F# guide on a Keilwerth tenor helps stabilize the f# key, which has the ability to flex significantly. This preventative measure helps keep the key straight and the pad sealing on the tone hole.
A machined delrin insert that fits into the High F# guide on a Keilwerth tenor helps stabilize the f# key, which has the ability to flex significantly. This preventative measure helps keep the key straight and the pad sealing on the tone hole.