4.25" X 4.25" Squares (Rotate on Application for Diamond Look.) Permanent Adesive 500 ORM-D (Other Regulated Materials for Domestic Transport) Labels on a 3" Core. D.O.T. Labels Identify Limited Quantity of Dangerous Goods. Large Size Ensures Visibility During Transport Ideal and Required for Many Medical and Business Goods, including those containing ethyl alcohol or isopropyl alcohol Kenco Label & Tag is a 3 generation U.S. manufacturer. We strive to provide great customer service at manufacturer direct pricing.