Designed exclusively for lockout/tagout Locks comes with one key: Compliance with OSHA "one employee, one lock, one key" directive Durable, lightweight, non-conductive body is easy to carry Special thermoplastic body offers superior performance against chemicals, moisture, temperature and UV Reserved-for-safety cylinder provides over 40,000 unique key changes available Key retaining - ensures that padlocks are not left unlocked , cannot remove key until shackle is closed Includes write-on "Danger" and "Property of" labels in English, French and Spanish Lock comes with one key: Compliance with OSHA "one employee, one lock, one key" directive Optional shackle heights of 1 1/2" or 3" are available upon request For extra keys, keyed alike options or master keying, please call us