These prisms are made from smooth, polished, optically-clear glass. They have an equilateral triangle shape (25mm edges), and are boxed individually.
WARNING: This product can expose you to chemicals including arsenic, 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.