(Stock image of 2317-2315 used)
These are insert adaptors, to convert glue-in broadheads to be suitable for different spine Easton aluminium alloy shafts.
These suit the following spine alloy shafts:
1816 shafts (approx 41 grains);
2016 shafts (approx 42 grains);
2114-2115-2117 shafts (approx 43 grains);
2213-2215 (approx 48 grains);
2315-2317 (approx 52 grains).