Locking mechanism multi-coded

In order to assemble you will need:
1 base
1 cover
3 pins (can by a steel pin)
3 slide ring (sun ring)
3 lock ring
inset the pin into the lock ring. (according to your own code)
Slide both on the base and secure them with the slide ring.
repeat this steps 3 times. :)
you can replace the code as much as you like