Finding your 1/4″ seam allowance and sewing straight are two of the most challenging aspects of quilting. Diagonal seam tape is a great aid in helping you do just that! No only does it “guide” you to your 1/4″ seam allowance, it also is a great aid in making half-square triangles and snowball blocks without having to mark diagonal lines on your fabric. A must-have tool for your tool kit!