Jumbo Building fun! Panelcraft® is the world’s first and only large-scale magnetic construction toy. Designed by an architect and a physics teacher to inspire spatial development and creativity in children, it helps develop both fine and gross motor skills, patterning, shape recognition, collaboration, and building skills. These five unbreakable plastic mirrors come with super strong adhesive mounting tape ready for installation in the frame side of any Panelcraft panel (sold separately as LR4010). Use as hand-held mirrors, or build with the Panelcraft set to do experiments with multiple reflections! Great for building periscopes! Comes with mounting instructions.