Knife Edge Sewing Scissors 5"-With Leather Sheath Knife Edge Sewing Scissors 5" (with Leather Sheath). Knife Edge 5 inch Sewing Scissors are versatile making them a favorite with quilters embroidery and sewing enthusiasts. The knife edge can cut through layers of material clip curves and notch or cut buttonholes. Made of double-plated chrome over nickel finish is durable and includes a fitted leather sheath for storage.