Fishman's V-200 violin pickup. I'm selling it because I no longer need it after using it for several years due to equipment replacement. It works fine, but I've discarded the accessories and box. When attaching it to the instrument, I used a thin object (like a pen) to tighten it into the small hole on the main body. This pickup is used to turn a violin into an electric violin by clipping it onto the bridge. The sound cuts through very well even when playing in a band. It worked fine on my instrument, but depending on the bridge of your instrument, you may need to shave it down to fit. If the size doesn't fit, please consult a music store. Please refrain from price negotiations.