http://www.drugoffice.gov.hk/g....b/unigb/www.thekeyla
L4V Hook Deadlocks L4V hook-deadlocks make a great upgrade for the back and side van doors and tailgates or doors for cabs. They are independent of the locking system used by the manufacturer and secured with a high-security key. This product, which is designed to stop 'peel and steal' attacks has been tested independently and can increase resistance by as much as 300 percent. It is ideal for multi-drop couriers and other applications where the driver may forget to lock the door of their vehicle. Hook Deadlock A ho