This special blade pulls the fabric into the scissors rather than pushing it away like traditional scissors. Things you will like about these scissors are the cushioned handle, easy for right or left hander to use, the blades are sharp to the very tip and the serrated blade keeps fabric from fraying. They are light weight and comfortable to use. The 7 1/2_ size is great for cutting single or multiple layers of fabric. You will comfortably cut up to 4 layers. If your quilt has a lot of one shape, layer cutting saves a tremendous amount of time.