Diagonal Seam Tape simplifies sewing diagonal seams by eliminating the need for marking lines, saving you valuable time. Featuring black lines flanking a red center seam, it replicates a precise 1/4" seam allowance, perfect for aligning fabric or creating half-square triangles. Made from durable washi tape, it adheres securely to any surface yet removes cleanly without leaving residue. Its design allows easy lifting for bobbin access and repositioning as needed. For best results, remove and reapply the tape after each project to keep your machine clean and tidy.