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