The HQ Wave B Template Ruler will help you stitch rolling waves, spines for flowers, and many more designs. The high-quality HQ Wave, B Template Ruler, is made of acrylic and is 1/4" thick. You can stitch 10" waves from peak to peak with either a 1" or 2" trough. The HQ Wave B Template Ruler package includes instructions for use, safety tips, and design ideas.