DROPOUT 281, CANNONDALE - Cannondale. - CNC machined 6061 aluminum. - Black anodized finish. - Attaches to frame with (2) M4x10 flat head screws. - Fasteners not included. - Replaces Cannondale Part # KP395. - For use with mechanical shifting systems. ~ Note: This hanger is for mechanical shifting systems. For Di2 systems, use DROPOUT-282. - 1 drop out per bag.