Try out any of the flexible filaments we sample. Don’t want to spend the money on a full roll or a Splash Spool? These trial sizes are for you. Each trial contains 15 feet/4.6 meters (~12 grams) each of your choice of filaments in plastic bags stuffed into a padded envelope with free shipping and tracking. Color: what ever is in stock and available. *If you order 2 or more of the same brand I will send you one long piece.