A type of locking mechanism featuring two deadlocking bolts for enhanced security. While the specific manufacturer “VRIO” could not be identified, similar “two-point deadlock” systems are designed to secure doors at multiple points, typically in the inactive leaf of paired doors. These systems often involve a primary bolt and an additional bolt (e.g., into the threshold) to provide robust locking. The “80MM” likely refers to a dimension of a component of the lock, such as the cylinder length or bolt throw, as seen in some deadbolt products.