2.25" X 2.25" Squares (Rotate on Application for Diamond Look.) Permanent Adesive. These are the smaller size 50mmx50mm for smaller packages. For larger packages please use Kenco KL-2107. 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