The Abus Eterna Professional 41 padlock can be used to secure valuables of medium value or items at average risk of theft. This padlock is constructed from Laminated Steel with ETERNA coating on each laminate for extreme corrosion resistance. The laminates have also been treated individually for enhanced corrosion resistance. The shackle is hardened and double bolted to provide extra protection. Inside is a pin tumbler cylinder. The padlock is self-locking, meaning it can be closed without the key by pushing downwards on the shackle.