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Trombone / Fr. horn lever string screw. Sold by each.

• Holton TR150


• Holton TR680 Collegiate

Fits Fr. horn models:

• Holton H104 Tuckwell


• Holton H109


• Holton H177


• Holton H178


• Holton H179


• Holton H180


• Holton H181


• Holton H277


• Holton H278


• Holton H279


• Holton H280


• Holton H281


• Holton H378


• Holton H379


• Holton H602 Collegiate


• Holton H650 Collegiate