DOT Container Label, Language English, Handling Label/Placard Type Hazardous Class, DOT/UN Product Form Label, Message Caution Unscrew This Bung Slowly. Do Not Unscrew Entirely Until All Interior Pressure Has Escaped Through The Loosened Threads. Remove Bung In Open Air. Keep All Flame, Light and Fires Away. Enclosed Electric Lights Are Safe., Label Width 3 in, Label Height 5 in, Material Paper, Self-Sticking, Labels per Roll 500, Package Quantity 500