A new optimized version of gyroscopic keyring with 6 rings, rotating freely in any direction and inseparable !!
Gently move the rings if you want to relax !!!
The external diameter is 4,5 cm.
You can scale up by 5 % ( about 4,75 cm ) or 10% ( about 5 cm ).
If you use brim, clean carefully the internal ring.

Have a look to my
" Free the prisoner ! " 2, at https://www.thingiverse.com/thing:2425481 ( second photo )
" Free the prisoner " at https://www.thingiverse.com/thing:2423590 ( third photo )
" the blossoming flower keychain " ( fourth photo ) at https://www.thingiverse.com/thing:2384745
" The blossoming flower 2 " ( fifth photo ) at http://www.thingiverse.com/thing:2310167

and to other gyro and tele Keyrings

• gyroscopic " open-work " keyring collection - at http://www.thingiverse.com/thing:2148303
  ( sixth photo )
• telescopic " open work " keyring 1 - at http://www.thingiverse.com/thing:2228378
  "supergyroscopic relaxing keyring - 8 rings", at http://www.thingiverse.com/thing:2067014
  “gyroscopic keyring 11”, at http://www.thingiverse.com/thing:1225044
  “gyroscopic keyring with flower 2”, at http://www.thingiverse.com/thing:1149171
  “gyroscopic keyring with flower ”, at http://www.thingiverse.com/thing:1091961
  “gyroscopic keyring with Thingummies”, at http://www.thingiverse.com/thing:879393
  “gyroscopic keyring 2”, at http://www.thingiverse.com/thing:644217
  and in the collection " My gyroscopic keyrings " http://www.thingiverse.com/gianfranco/collections/my-gyroscopic-keyrings

Have you seen my small lights ? Look at the collection " My small lights collection " at http://www.thingiverse.com/gianfranco/collections/my-small-lights-collection