Music Hall /Pro-Ject Anti-Skate Weight for tonearm This weight works with the following models, among others: Music Hall MMF-2.1, Music Hall MMF-2.2, Music Hall MMF-5 Music Hall MMF-5.1, Music Hall MMF-5SE, Music Hall MMF-5.1SE Music Hall MMF-7, Music Hall MMF-7.1 Music Hall MMF-9, Music Hall MMF-9.1