1 DOOR LOCK, 8 KEYS, 11 SCREWS, 1 KEY LOCK RING, 1 COUNTER PLATE, 1 DOOR BRACKET Can suit both left and right hand door( by rotating the lock 180 degrees) High quality stainless steel high anti theft and high safety Double lock head inside and outside With electronic control unlocking unit and spring adjusting balance unit Easy to install user-friendly Support manual unlocking .5 keys computerized Lock operational with 12-24 v dc 11 SCREWS