Hardened design provides additional protection against leverage attacks
Patent-pending integrated Evolution Series 4 lock head
High-security disc-style cylinder is resistant to pick-and-drill and most common hand tools
Patent-pending pin-less link design secures chain to deadbolt; eliminates any "weak link" due to the extensive holding power of the link itself
Six-sided chain links are 10mm and made of 3t manganese steel
Include three stainless steel "I" keys, one of which has an LED bulb for low-light situations
Nylon sleeve is weather-resistant and prevents scratches against painted surfaces
