Material: spring steel Uses: toys, cars, locks, batteries, lamps, multi-purpose, gifts, crafts Large Motor Skills, Thinking Stretches, wiggles, walks, and jiggles. Ideal for presents, party favors, Easter baskets, grab bags, prizes and stocking stuffers. All Products From Us Have Undergone Strict Quality Checks. if There Is Any Quality Problem Or You Are Not Satisfied With The Product contact Us. we Will Give You The Best Solution.