Standard function: 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. Owner key: 5 pcs 5. Owner card: As a indication of the key duplication and quality guarantee Optional function: 6. Service key system: 1pcs, Once the owner's key be used, the service key will be disabled. 7. Stiffening device: Central breaking-proof, anti-snap, body reinforcement 8. Master Key or Key Alike are available 9. Finish: 01-Brass polished with varnish 02-Bright Nickel plated 03-Satin Nickel Plated |