We are offering here the Steel Padlocks that are some of the sturdiest and are built for heavy-duty jobs. They are the most corrosion resistant. Pin-tumbler key locking mechanisms are the most difficult locking mechanisms to pick. When choosing between padlocks with four or five pins, the lock with five pins is harder to pick. They are made with reinforced laminated steel that withstands severe physical abuse. The Steel Padlocks are offered by us in various types for commercial uses.