Crusader's Chain Leggings
성전사의 사슬 다리보호구 · 十字军的链甲护腿
Classes that can use it: 
💰 Auction House lowest
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Observed drops
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Drop rates: AtlasLoot Classic · BiS: wowtbc.gg WoW Forever Gear Lists · Names: game client (collected with the Forever Assist addon). May differ in Forever.