Accuform Signs “CYLINDER EMPTY IN USEFULL” WhiteRed English Perforated Cylinder Status Safety Sign measuring 5 34″ X 3 14″ is printed made of 15 mil rigid RP-Plastic for more strength and enduringness. Compressed air sign is ideally designed to identify the hazards of compressed air vessels and supply line pressures. Relatively bendable tag is perfect for indoor and outdoor temporary tagging applications. High-strength plastic tag being water-resistant can be used in all weather conditions. Flexible tag will not readily break down over a wide temperature range. Durable tag with an abrasion resistant writable surface tolerates stretching and ripping. Tag has a 38″ hole at the top reinforced with metal grommet to avoid pull off. Tag provides resistance against tear, weather and chemical in dirty as well as greasy environments. Tag with mar-resistant, matte surface is sold as 25 per pack.