I've had the MINI crimper, just TOO small to make much indent in crimp tubes. I used to just flatten the crimp tube with my flat nose pliers. Since I've tried the standard size crimper, I now can't imagine finishing off strung pieces without it! It makes short work of crimping tubes, simultaneously creating dual spaces for the two bits of beading wire inside and a quick second crimp curls it closed the rest of the way and secures it forever! An absolute MUST!