this is the sog twitch II and the spyderco delico 4 i have carried the sog for a edc for about 6months now and no problems.when i got the spydie in the mail today i was surpized about the difference in the size of the two i have a big hand and the sog fits great the spydie seems to be smaller but is only by a inch but when you hold it in your hand is seem a more than that it just might be me.i let you know after i carry the spyderco for a while.and the hole is hard to get use two when you have carried assist knife for awhile.more to come in a few months...