Features a 16mm patented square parabolic shackle security made of hardened special steel. Double bolted shackle in the lock body made of special hardened steel,with patented ABUS power cell technology. Extra wide shackle for universal locking possibilities. ABUS X-Plus cylinder with more than 1.2 million key variations for top protection against picking attacks. Highly corrosion resistant. Manually operated keyhole cover protects lock body against dirt and corrosion. Two keys included (one has an LED). ABUS Code Card included for additional or replacement keys.