The originals, perfectly matched to Shimano cranks.
Shimano DURA-ACE FC R9100 / FC R9100 P chainring, 34 teeth, MS type, 110 mm bolt circle, asymmetrical
Shimano DURA-ACE FC R9100 / FC R9100 P chainring, 39 teeth, MW type, 110 mm bolt circle, asymmetrical
Shimano DURA-ACE FC R9100 chainring / FC R9100 P, 50 teeth, MS type, 110 mm bolt circle, asymmetrical
Shimano DURA-ACE FC R9100 / FC R9100 P chainring, 52 teeth, MT type, 110 mm bolt circle, asymmetrical