This same saddle is used for many Kahler models, just the roller material is different depending on your tone preference. Rollers are available in brass, steel and teflon and also large size for strings over .048 (sold separately).
Fits all cam operated Pro, Hybrid and X-Trem tremolo and fixed bridges for guitars only. (22xx, 23xx, 4200, 4300, 7200, 7300, 3300, 3310, 4330, 7330). You can also upgrade a Flyer tremolo with this longer sustaining saddle, you simply remove the bar that says FLYER on it then slip these saddles onto the exposed saddle rod.