Rubber contact strip for synthesizer keys, single-note. This rubber strip contains carbon contacts inside the "bubble". When a key is depressed, the key presses down on the bubble, and the carbon makes contact with the circuit board (the keyboard contact board). This type of strip has two contacts per note; one is to play the note itself, the other is to indicate the velocity at which the note was struck.
This part may be either NEW or USED.
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