I just love these clips!! I use them to hold the fabric in place while piecing. I've been making a queen-size Labyrinth quilt with lots of seams to match and they are amazing! I haven't used them for binding yet, but plan to with this quilt. You can't run over them with the machine like pins and they don't distort the fabric. Those little teeth just grab and hold. I bought the 50 pack from Amazon and I will probably buy another 50. Goodbye straight pins!!