Material Size OPP 18mm × 1,000m Roll We are able to offer other sizes not listed. Also, some letters are printable. This tapes work best for wrapping up plastic cases for food packages in grocery stores. Also, hot-melt glue is used for these products for the safety. *Hot-melt glue is non-pollutant since it doesn't contain any organic solvent. It also isn't toxic or flammable to ensure safety of human society and the environment.