Kluson USA? Offset Conversion Post Set For Samick? Tune-O-Matic BridgesThis kit consists of unique offset conversion studs to convert your odd-sized bridge to conventional US dimension ABR-1 bridges.These conversion studs were made to specifically work with the Kluson ABR1 bridges. Other ABR1 bridges may have differences in the diameter of the stud hole in the frame which can cause wobble.