Terra Firma Nock Bushings serve two purposes;

• Allow you to use .166 nocks with your .204 arrows, for those who prefer a smaller gap between your nocking points / d-loop using lower profile nocks.
• Protect your carbon from damage during tight group shooting. The rigid stainless material acts as a collar to deflect arrows aimed at the same spot.

Must be glued in prior to use - we recommend using a hot melt glue like Bohning Cool Flex should you need to remove them to replace a damaged nock.