 As mentioned above, grading is a subjective task and no two grading systems have an exact one-to-one correspondence.Therefore, there is not a perfect agreement in the literature about grading system comparisons or conversion rules.The British Adj grades (E) do not grade only the hardness of the climb but the overall feel of the route, i.e., how hard gear is to place, how good is the gear, how high up is the first piece of gear, the possibility and severity of a ground fall, and how dangerous the climb is.