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.

Features:

• Laminated steel core with Weather Tough® thermoplastic casingprotects against extreme weather conditions
• Tough cut octagonal boron-carbide shackle is 50% harder to cutthan hardened steel
• Patented octagonal shackle is harder to grip by bolt cutters.
• Professional grade ball bearing locking mechanism providesmaximum pull and pry resistance
• 4 keys included
• Patented octagonal shackle is harder to grip by bolt cutters.