The Crescent Coralhead is a standalone armor piece that can be acquired from the Linkman the Junkman at a price of 650,000 gold. Other methods of acquiring the Krunkston Four include but are not limited to:
While equipped, the armor piece will give the user 7 armor points, while also boosting Magic damage by 50 and a 10% increase of endurance.
In appearance, it's a crescent shaped piece of coral.
<gallery> RobloxScreenShot20180723_184949946-0.png | A player wearing the Crescent Coralhead