The WP in the name of the Extreme 83WP/53 stands for weather protected, because this lock holds its own against rust even in the most severe weather conditions.

• Shackle and lock body made of hardened special steel with NANO PROTECT™ coating for extreme corrosion resistance
• Precision pin cylinder
• RK: cylinder can be re-keyed to match an existing key
• As required, either automatic locking = locking without a key by pressing down on the shackle, or key-retaining = locking only with a key (Z-bar)
• Extremely weather-resistant due to the full plastic coating, including cylinder protection and sealed shackle holes
  
• Shackle can be exchanged within seconds
• Precision pin cylinder