Hummingbird & Flowers Approx: 2 x 3 Blue Best Flexible Urethane Rubber molds! Now you may produce beautiful professional looking artwork with our easy to use urethane rubber flexible push molds. Save money by creating your own jewelry, ornaments, magnets, scrapbook embellishments and so much more. Make handmade hummingbird and flower jewelry, trims and gifts that will be treasured for years to come.