I bought some of the shorter replacement strips and got 20 in the package, I think. I am thinking of putting one of them on the feed dog cover plate and putting the other one butting up against it on the cover plate of my bobbin. That way I don't have to cut them. I can also but them up to each other end to end to make thee line longer on other machines. Or at least this is what I was thinking when I bought them. I was planning on leaving the side that sticks to the holder with the paper on it. Which side did you actually adhere to the machine, anyway?