Aluminum, 0.005 inches thick and sprayed on one side with an off white flat paint which will readily accept drawings made by pencil or ink. After design has been penciled in, the foil can be embossed using the tools in the Tactile Graphics Kit, 1-08840-00. Can be used for Braille. The roll (model 1-04120-0, $45.26) is 11 inches wide and approximately 150 feet long. Also available in 11 by 11 inch sheets (model 1-04090-00, $15.20), 30 per pack.