Master Lock use the toughest boron alloy material and cutting edge technology, registering over 40 patents, to create Excell: A truly high-security padlock that is 50% stronger than a standard padlock. The laminated steel covered padlocks have a weather-resistant Thermoplastic cover, to protect the lock even in extremely bad weather conditions.

• Patented octagonal shackle is harder to grip by bolt cutters
• Tough cut octagonal boron-carbide shackle is 50% harder to cut than hardened steel
• Laminated steel core with weather tough thermoplastic casing protects against extreme weather conditions
• Professional grade ball bearing locking mechanism provides maximum pull and pry resistance
• Keys included x4