These dark adamantine bracers are slightly difficult to separate, as if a magical field attracts them to one another.

Warriors tired of taking more damage than they deal out appreciate the power of reciprocal bracers, which allow them to turn their enemies’ powerful strikes against them. If you score a hit in melee against someone who scored a critical hit or sneak attack against you since your last turn, you can activate these bracers to automatically consider your attack roll a critical threat. You must still confirm the critical hit as normal.
This ability functions two times per day.

Prerequisites: Craft Wondrous Item, keen edge.
Cost to Create: 2,500 gp, 200 XP, 5 days.