The Specialized REV2 Alloy MTB Derailleur Hanger is a 30mm, Gen 1 derailleur hanger crafted from 7075 Alloy.  Specialized REV2 Alloy MTB Derailleur Hanger Compatibility Specialized Bighit Specialized Camber Specialized Camber Fsr Specialized Carve Specialized Crave Specialized Crossroads Specialized Demo Specialized Enduro Specialized Epic Specialized Epic FSR Specialized Era FSR Specialized Fate Specialized FSR XC Specialized Hardrock Specialized Hellga Specialized Hotrock Specialized Jett Specialized Jynx Specialized Myka Specialized Myka FSR Specialized Myka HT Specialized P Series Specialized Pitch Specialized Rockhopper Specialized Safire Specialized SJ  Specialized Status Specialized SX