Agreed about the wing clipper tool. Made a quilt with several hundred geese without it and the trimming took longer and wasn't as precise. Broke down and bought her tool. Just finished one with 320 geese, piece of cake. I don't normally buy specialty rulers, but since I really like using flying geese units, this tool earned a place in my tool box. In fact, I bought both sizes. I like how with her tools you can make about 10 different sizes with each.