A. Sewing basting tape is a practical tool for quilting and sewing, particularly useful for sewing diagonal seams and straight lines, helping to achieve straighter and more symmetrical stitching. B. It has ideal adhesion, leaves no residue after peeling off, and is easy to handle. It is recommended to remove or replace the tape frequently or after each project to avoid leaving residue on the machine. C. The red line in the middle aligns with the machine's needle, and the black lines on both sides are 1/4 inch from the center line, representing 1/4 inch sewing capacity; simply place the tape with the red line in front of the needle as a seam allowance. D. 1/4 inch seam diagonal seam tapes are a necessary tool for those who enjoy quilting, sewing, or crafting. The package includes 4 rolls, which can meet various daily needs.