Pre-opened and ready to fit by hand, no expansion tool needed. Slip each ring onto an adult bird's leg, close with a closing tool, and done. Each band is laser-engraved with your custom prefix and a unique sequential serial number for permanent, individual identification.

The concave profile keeps engraving recessed below the ring's edges, protecting it from cage bars and perches so your serial numbers stay readable for years. In vivid green, the official OMJ color for 2026.

At 4.7mm ID, these fit lovebirds, English/Exhibition budgies, grass parakeets, lineolated parakeets, Bourke's parakeets, kakarikis, diamond doves, and zebra doves.

Key details:

• Quantity: 50 bands

• Size: 4.7mm ID × 4.5mm Height

• Type: Completed Open Split Ring (hand application, no expansion tool required)

• Profile: Concave

• Material: Anodized aluminum

• Color: Green, official OMJ color for 2026

• Engraving: Custom prefix + sequential serial numbers

Provide your prefix and starting number when ordering. Prefer rings on a cotton string? Ask about our Standard Split Ring version.