This one is special and one of the few that I don't have and always wanted. It folds up to the size of a sewing machine and is the only mid-gauge punch card machine (except for its twin HK-160 that doesn't fold up.) I bought one last year but it broke in shipping (sad, it was in beautiful condition and even with insurance I had to pay for the shipping that broke it). But 3 members of my knitting guild emailed me on Sunday and told me there is one on ebay. So I couldn't resist. It works - for stockinette at least. I haven't tried other functions yet. Needs a real good cleaning too.