KAHLER® HYBRID 7300 SERIES - 6 STRING FLAT MOUNT TREMOLO - CHROME The Kahler® 7300 flat mount series locking/floating tremolo system is designed to drop onto any flat top guitar. All 7300 series models include onboard 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. String lock not included.