USC S-2521 - D.O.T. LABELS - EXPLOSIVE 1.4S, 4 X 4" - LABELS CAN BE COMBINED FOR QUANTITY PRICING. HAZARD CLASS 1 - CORE SIZE: 3" WHITE, HIGH-GLOSS PAPER WITH PERMANENT ADHESIVE. - EQUAL TO S-2521MANUFACTURER:USCMANUFACTURER PART NUMBER:S-2521UNIT OF...