kavacha (fate)

One half of Karna's Noble Phantasm Kavacha and Kundala: O' Sun, Become Armor, consisting of his golden armor. He has to sacrifice both components to activate Vasavi Shakti.

The armor includes his spiked collar (just a plain collar in Fate/EXTRA), gauntlets, greaves, armored boots, and the two floating objects around his shoulders.