CHENGYIDA 5-PACK MAGNETIC SEAM GUIDE FOR SEWING MACHINES This magnetic seam guide is widely used in clothing industry and domestic sewing work. It's easy to use, inexpensive and a great helper in sewing a straight line or circle line track. This extremely powerful magnetic seam guide can be easily mounted and adjusted to any position of the metal throat plate.It greatly improves the efficiency of the garment making process. QTY: 5PCS