These are high-quality, durable magnets that can be used over and over again. Great for beginning readers, English Language learners, and people with special needs. Award-winning learning magnets. High Frequency Words set is 205 pieces. Words are color-coded for grammar-nouns are green, verbs are red, adjectives are blue, pronouns are yellow, and so on. Pieces measure approximately 1"H x 2"W.