OMG, it is an awesome tool. When doing FMQ or Embroidery, you can use it to pull the bobbin thread to the top without damaging anything because it is plastic. The little square end is exactly 1/4" so if you are sewing seams and having trouble keeping it at a good quarter, just lay that end of the Purple Thang" in front of the needle and eliminate the guesswork. I have one with every machine and never go to a cloass without it.