Graph Tech Tusq Nashville Tune-O-Matic Saddle Set PQ-8500-00 String Saver Originals have a more balanced tone, with highs, mids and big open lows. You will also notice an increase in sustain by up to 25% over brass saddles and 15% over steel. Fits pre-2000 Gibson Nashville Tune-o-matic bridges, Schaller 455 / 456 and Schaller made in Germany. These bridges are usually stamped on the bottom to designate model number. (Gibson Nashville TOM pre 2000, Schaller 455/456 and Schaller made in Germany) Includes 6 TUSQ saddles Part Number: PQ-8500-00 Available at Ant Hill Music!