These templates are designed for "Plop and Stitch" ease in machine quilting. You position the template where you want the stitching to go and stitch against the template. Fast and easy! Set of three different sizes of hearts. The shape of the top of the heart may look a little funky, but remember that the hopping foot takes up 1/4" outside the heart and smooths out the stitched shape! Templates measure approximately 3 1/2" x 4", 5" x 5 1/2" and 6 1/2" x 7 1/2". Instructions included. Sizes in Set B will fit in between the sizes of the original set.