Those OCC heads are custom designed for UD Youde Goliath V2 Rebuildable Tank Atomizer.
The wires are made from Ni 200, which is for those Mods with temperature control function.
Features:
1. Provides incredible flavor and vapor using the 100% Organic Cotton made in Japan
2. Uses a dual coil and ceramic base to produce the best flavor
3. The ceramic base allows it to be cool even when chain vaping