Abus 82TI/70 Monoblock Titalium Padlock
Security Level = 6 (out of 10 - see FAQS)
Keyed alike padlocks are available in large quantities.
Titalium is a special alloy combining the properties of aluminium and titanium. The result is a high security padlock that offers the strength and reliability of brass excellent corrosion resistance and is still relatively lightweight.