This Knex Education set provides a fun and engaging way for children aged 8 and up to learn about simple machines, with 198 pieces allowing for the creation of 7 different models revolving around the theme of gears. The multi-color plastic pieces are durable and high-quality, providing a long-lasting, engaging experience. The set is part of the STEM Building Solutions product line, designed to encourage interest and learning in science, technology, engineering, and math. No broken pieces.