The Master Lock No. 411 Zenex Thermoplastic Safety padlock features a 38mm wide thermoplastic body and a metal shackle. Designed specifically for safety lockout/tagout applications, padlock is key retaining to ensure that padlock is not left unlocked and the high-security reserved for safety 6-pin tumbler cylinder complies with the "one employee, one lock, one key" best practice. Write-on, multi-language padlock labels are included for on-site customization.