For years we have refused to stock 'sets' of hexes because the pack always included a number of smaller sizes that overlapped with conventional nuts. We found most customers (including ourselves) only wanted hexes that were bigger than the wired nuts. We always stocked all sizes loose but felt the sets were a bit of a fiddle since they encouraged people to buy things that most were unlikely to want in the long term*. 

DMM are the first manufacturer to have thought this through so we are happy to finally be able to break our own rule. We now stock the superb new DMM Torque nuts, very light, very colourful very effective and with an extendible sling. They suit from a thin hand to a standard fist crack.

* There are always exceptions. If you are one of those that love tiny Hexes then fair play to you. We are just in a minority. Our argument wasn't with the small hexes but with the implicit message they gave to beginners that we 'needed' every size on our racks.