SHRED LAB Iron Horse K2 Airbourne Columbia Jeep Derailleur Hanger for Bicycles #1501Hanger Fits Iron Horse Dual Suspension Models DW Link Ironhorse K2 Airbourne Jeep Columbia Bike Derailleur Hanger with Bolts Fits Majority Iron Horse Dual Suspensions DW Link Fits Airboure, Ironhorse DS, K2, Jeep, Columbia Derailleur Hanger #77 Attaches to frame with (1) M8 Chainring Bolt set ( Included )