Innovative locking system, with a "rotary hook deadboll". Pull resistance of up to 2000 kg. Excellent vibration resistance and impact strength (patented system). Protective steel case totally enclosing the lock and striker. Elettrika is non handed (patented system) and with a variable backset from 50 to 80 mm (patented system). Elettrika is fitted with a new type of self-adjusting "swinging rod" striker, active both vertically and horizontally (patented system). The rotary hook deadbolt of Elettrika can be operated in two different modes (patented system).