Open wide for holding multiple layers of fabric. It won't damage or distort the fabric. Great Holding capacity for different types of crafts. 1/4" and 1/2" seam allowance markings on the base of clip of clip. Clip base is flat for easy feeding to presser foot. The Wonder Clips are great alternative to pins, especially when working with heavy weight fabrics, piles, and vinyls. It can hold layered sections of sewing projects such as handle connectors to handbags and piping without distortion. It holds quilt binding while sewing and it's easy to see and easy to find when dropped on the floor. Works well with sergers.
What a great product. I use them to replace straight pins when I sew. They are like post-it notes...how did I ever live without them. Now we need an intermediate size that are bigger than the little ones and a bit smaller than the big ones.