With 5 keys Durability: 300.000 cycles Gate Block System built-in. Special alloy iron gate block bar for extra security if attacked. A security pin automatically triggers blocking the cylinder preventing unlawful entry. The cylinder can still be operated from the inside with the key. 291.140 different key combinations According to UNI EN 1303 Includes: 11 pins (6 main pins & 5 side pins) 9 hardened steel anti-drill pins 2 snap slots on housing (easy to break, in order to protect the inner design of the door lock) Blank key available (60097)