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Duro locks are built with a revolutionary 12-pin cylinder system designed for complete locking protection.
Our highly secure mechanism uses two rows of six anti-drilling pins of vaarying length and double-grooves,
making it almost impossible to pick. Additionally, our 12-pin cylinder system offers more than 16 million different combinations,and it is designed to be used with a large number of locks, such as profile cylinders, deadbolt cylinders, cam locks, and padlocks.