There is no adjustment on CB pedals. You don't need them. I have 5-7 different SPD pedals, different models, and even on the easiest settings they are not as easy as CB pedals to unclip from. With CB pedals, as the cleats wear, they become easier and easier to unclip which is the opposite of SPDs, as SPDs wear, they become harder and harder to unclip however, SPD clips are steel so they wear extremely slow, CB cleats are brass and wear much faster. The CB road cleats are harder to clip in than the MTB cleats, they have a different shape though both are interchangeable with all CB pedals.