Oh really, now? I thought it depended on the dremel tool(that's what they call those things which happen to be conveniently unfindable, eh?).
Wonder how you could use UR-Small-13 and 14 correctly though. I've always found small bases like that to be a pain to find anything that went well with them. I like the 40 and 60mm bases. Will they be available separate, or in packs? Would be a good thing to get before I get around to doing my second post-apoc army.