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. Special designed  combined pins for snake key way. The combination of code up to  3800,000
5. Owner key:  5 pcs
6. Owner card: As a indication of the key duplication and quality guarantee
Optional function:
7. Stiffening device: Central breaking-proof, anti-snap, body reinforcement
8. Service key system: 1pcs,Once the owner's key be used, the service key will be disabled.
9. Master key and  Key alike  are available
10.Finish:   01-Brass polished with varnish
                      02-Bright Nickel plated
                      03-Satin Nickel Plated