9" x 9" Square Quilter's Clapper is perfect for pressing seams for quilting or sewing. This clapper is made from unfinished oak, which helps absorb moisture from fabric to leave flat, crisp seams. The top is rounded smooth with a wooden knob handle. Press your seam with your steam iron, then apply the clapper with firm pressure to set the seam. Use them on quilt blocks or garments for seams, creases and pleats any time you need to flatten a large area.