Accuform Sign "DANGER DO NOT OPERATE" Lockout Tag measuring 5 7/8" X 3 1/8" is made of 15 mil rigid RP-Plastic material. Tag is used to recognize crucial lockout/tagout points to allow maintenance to be performed safely. Ideal for indoor and outdoor. Water-resistant, flexible tag and Writable surface. Tag has a 3/8" hole at the top reinforced with metal grommet.