Spined Bat Wing

Source
This item drops from:
 * Shrike Bat in Uldaman
 * Blood Seeker in Shadowfang Keep
 * Vile Bat in Shadowfang Keep
 * Greater Kraul Bat in Razorfen Kraul
 * Kraul Bat in Razorfen Kraul
 * Blind Hunter in Razorfen Kraul