These chainrings are new in the box. See pictures for more details.
The Q-Ring design provides smooth and uniform pedaling without sudden accelerations or shifting problems. It increases and decreases the gear ratio throughout each pedal rotation providing a lower gear ratio at the dead spots which improves your knee comfort.
Model: Q Rings
For Bike Type: Road Racing Bike
BCD: 130 mm
Teeth: 53 / 39 t
Speed: 11 Speed
Weight: 316 g
Stock # 001406