The AS pro profile knob cylinder is ideal for front doors. The door can be easily locked and opened from the inside without a key thanks to the easy-to-hold rotatable knob fixed on one side of the cylinder. Due to high-quality anti-drill, anti-pick, anti-bump and anti-snap protection, break-ins are prevented particularly effectively. The profile knob cylinder has the keyed alike system no. 34 and comes with 3 corresponding cylinder keys as well as a code card in order to cut more original duplicate keys.