Idesco's Lockout/Tagout "Do Not Operate" tags comply with OSHA 1910.147 Lockout/Tagout Regulation and ANSI Z535. These safety tags are durable and strong and withstand moisture, dirt, grease, chemicals and extreme temperatures. They are reinforced with a 3/8" metal grommet. Each tag has a pull strength that exceeds the OSHA-required 50 lbs. Printing is encapsulated inside rigid PVC. This rugged material has a durable, hard-matte finish which retains pen, pencil and marker notations and pencil may be erased for multiple use. The tags are clear and effective at reducing accidents and preventing worksite mishaps.