KAHLER HYBRID 7200 SERIES - 6 STRING STUD MOUNT TREMOLO - BRASS CAM WITH BRASS SADDLES - CHROME The Kahler 7200 stud mount series locking/floating tremolo system is designed to retrofit most stud mount bridges and will work with carved tops. All 7200 series models include fine tuners and 6 way adjustable saddles: side to side for perfect string spacing; front to back for accurate intonation and up or down for ultimate action and radius matching. Only top routing is required and in some cases, the stud inserts may need to be relocated. String lock not included.