-- The red line in the center is aligned with the needle of your machine, and the black lines on either side are 1/4 inch to each side from the center of the lines, to represent a 1/4 inch seam allowance.

-- Our diagonal seam tape is simply washi tape, placed on the front board of the sewing machine, as a guide when you sew the bevel seam, and easy to peel and use.

Specifications:
Size: 11 yards * 0.59 inch
Color: Symbolic blue, red and black lines