These prisms are made of optically-clear acrylic. They have an equilateral triangle shape, and are boxed individually. Each side of the equilateral-triangle-face is 25mm. This prism is 25mm long.
PRODUCT WARNINGS
WARNING: This product can expose you to chemicals including ethyl acrylate, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Our products are not toys. Use in a laboratory or educational setting only. Not for children 13 and under.