LMFAO. Kinda reminds me of going to Port Cargo store and buying a set of special sockets used for grabbing rounded off bolts and finding out the set skips a couple of the most common metric sizes you would really have to get and be the sizes most likely to get broken from the most use. Another example is you buy the socket organizers that are missing some common socket size spots ,and the larger size pegs are too damn close together for the sockets to fit side by side . Sometimes though you do get Bonus size sockets though like a 20mm, 23mm, 25mm, 26mm that you likely never see much use for :-))