Like a collarbone, the mech hanger is a fuse that prevent your frame from being damaged during a crash or on rough encounter with the terrain. You may have only one collarbone per shoulder, but you still have the choice to get an extra mech hanger or two to face any situation that could end your ride.
The derailleur hanger is fitting for:
CAPRA MKI CF Comp 2 - 1. Generation/2014
CAPRA MKI CF Comp 1 - 1. Generation/2014
CAPRA MKI CF Pro - 1. Generation/2014