Shimano 4 bolt pattern Q-Ring. Ideally paired with 36t inner Q-Ring for a Shimano 4 bolt Cyclcross ratio sold separately.
Picture shown includes the inner ring, which isn't included in this purchase.
46t Shimano 4 bolt Semi-Aero Qring- 110 BCD - single outer 'Cross chainring
If you are removing original Shimano 4 bolt chainrings, you will need cover bolts or the ROTOR standard road double 4 bolt set to fit ROTOR 4 bolt chainrings