Kluson String Tree Retainer Guide Electric Guitar Black
These string guides (string trees) help minimize tuning problems and sympathetic overtones caused by low string tension.
Mount type is screw with guide pin
Replacement for the Fender® American Standard® Series string trees part number 003-9475-049. 
These items may arrive without retail packaging as we stock small parts like this in bulk.
Love the Tone or Send it Home - No Fuss Refund or Exchange