Christmas bulbs for your layouts! Use these 4 different size bulbs to give your layouts some holiday cheer. Decorate a Christmas tree, or just add some embelishments to your layout. The set also includes a few patterns and shapes so that you can create different looking designs on your ornaments. This set contains 13 pieces. The largest bulb is designed to Partner with Falling Maple to create a bulb border. The 3 other sizes are designed to Partner with Cogs and Clouds to create a varied size bulb border.