** Please use the drop-down menu above to select the quantity of rings that you require**
3.3 mm inside diameter Incoloy (hard) metal rings.
- This product will only be sold and shipped to appropriately licensed BTO ringing-permit holders.
C-permit holders: please ask for the rings to be issued in your Trainer's name or Ringing Group name and not your own. Please ask your Trainer to email sales@bto.org in order to authorise the order.