Abstract: Joining element for joining two components, whereby the joining element displays a central part made of a first material displaying self-damping (properties), as well as a damping member surrounding the central part made, in contrast, of a softer material; and whereby the central part displays a first end designated as the base, as well as a second end having a smaller circumferential surface relative to the base; and whereby the dampling member surrounds the central part in interlocking fashion, at least in the region of the second end; and whereby the central part displays a contour with an undercut running from the base to the second end, into which the damping member extends.

Abstract: The invention relates to a key lever for musical instruments, including a swivelling support (1) and a key (3) which closes a finger hole of the musical instrument. The key (3) is provided with a seal (7) for sealing the finger hole and is fixed to the support (1) in such a way that it can be adjusted. A screw (5) extends through a drill hole (4) in the support (1), the drill hole (4) being in alignment with the center of the key (3). The screw (5) is connected effectively to the key (3) and in different positions produces different positions of the key (3) in relation to the support (1). The operating end of the screw (5) is accessible from the side of the support (1) opposite the key (3). According to the invention, a vibration-reducing transition piece (6a) is positioned between the screw (5) and the key (3) and the support (1) has a spherical segment shaped, curved section.