Non-removable bird rings year 2026 , in green anodized aluminum.

Packages with diameter and numbering as follows:

> diameter 2.5 mm – 25 rings numbered from 1 to 25
> diameter 2.5 mm – 25 rings with numbers from 26 to 50

> diameter 2.7 mm – 25 rings numbered from 1 to 25
> diameter 2.7 mm – 25 rings with numbers from 26 to 50

> diameter 2.9 mm – 25 rings numbered from 1 to 25
> diameter 2.9 mm – 25 rings with numbers from 26 to 50

> diameter 3.1 mm – 25 rings numbered from 1 to 25
> diameter 3.1 mm – 25 rings with numbers from 26 to 50
> diameter 3.1 mm – 25 rings with numbers from 51 to 75

> diameter 3.8 mm – 25 rings numbered from 1 to 25

> diameter 4.5 mm – 25 rings numbered from 1 to 25
> diameter 4.5 mm – 25 rings with numbers from 26 to 50

> diameter 5.0 mm – 20 rings numbered from 1 to 25
> diameter 5.0 mm – 20 rings with numbers from 26 to 50

> diameter 6.0 mm – 20 rings numbered from 1 to 25