WHEELS MFG DERAILLEUR HANGER 269 All Wheels Manufacturing replacement derailleur hangers are produced in their Colorado shop to exacting tolerances CNC machined 6061 aluminum Black anodized finish Distance between mounting holes: 28mm Attaches to frame with (2) M3x8 flat head screws Fasteners not included Replaces Cannondale Hanger #KP284 Check www.wheelsmfg.com for full compatibility Important Note: Cannondale made a running change in their KIDS TRAIL 24 bike production with early runs using a unique hanger (Cannondale part # KP316), which has different hole spacing than their DROPOUT-269. Measure the distance between the hanger mounting holes. DROPOUT-269 mounting holes are 28mm apart center-to-center. Cannondale KP316 is 24mm. Later runs of KIDS TRAIL 24 frames will use DROPOUT-269.