Safety tags identify a temporary hazard until that hazard is eliminated or hazardous operation is complete. They comply in accordance with OSHA 29 CFR 1910.145 and ANSI Z535 requirements. Tags are thin and flexible poly-based cardstock without wood content. They're longer-lasting, durable, tear-resistant, waterproof and will not crack, distort or shrink, when compared to traditional paper cardstock. Easy to write-on matte surface has 3/8 in plain top, pull-resistant hole. Accuform® Lockout Safety Tag, DANGER DO NOT OPERATE Legend, Black/Red/White, 5-3/4 in Height, 3-1/4 in Width, Cardstock, 3/8 in, Reinforced Metal Grommet