Oval chainrings featuring subtle but efficient 10 ovality where the smallest diameter is at the weakest point of the pedal stroke and the maximum diameter at the strongest point of the pedal stroke q rings offer 5 sometimes 4 or 3 optimum chainring positions ocp that can be adjusted to take advantage of the pedals stroke39s most productive zone q rings are ideal for riders trying these rings for the first time and getting the correct setup can take a short period of time would advise