This Apple Core template is sized to work nicely with 5” precut squares. Slit 'N Sew templates represent a truly revolutionary improvement by allowing piecing to be done quickly and easily each and every time! Simply use a rotary cutter to make small cuts that are precisely located on the templates. Then proceeding a slit at a time, line up the next slit from each piece that is being pieced together and sew to that slit. The result? A perfect piecing job in no time!