Safety Tags identify a temporary hazard until that hazard is eliminated or hazardous operation is complete. They comply in accordance with OSHA 29 CFR 1910. 157(e) and ANSI Z535 requirements. Strong and durable plastic is ideal for industrial environments. Resists chemicals, tears, and abrasions, plus withstands dirt and grease. Writable surface is abrasion-resistant. Top has 3/8" hole reinforced with brass grommet to prevent pull-off up to 50-lb strength.