1. Heat treated steel vertical drill-resistant pins on both side of cylinder
2. Mushroom counter pins resistant to attack.
3. 6 rounded-head picking proof combination pins.
4. Stiffening device: Central breaking-proof, anti-snap, body reinforcement
5. Service key system: Once the owner's key be used, the service key will be disabled.
     Red key : used as Service key 1pcs
     Blue key: used as Owner's key 5pcs
6. Owner's card: As a indication of the key duplication and quality guarantee

Others:
Body: Solid extruded brass
Cam: Sintered steel DIN CAM or GEAR CAM are available
Finish: 01-Brass polished with varnish
02-Bright Nickel plated
03-Satin Nickel Plated