Those are Vertical OCC coils for Subtank series & Toptank series.
There are 4 resistances: 0.2ohm, 0.5ohm, 1.2ohm, 1.5ohm, all are Nichrome wires.

Recommended wattage range:
0.5ohm: 15-60W
1.2ohm & 1.5ohm:10-26W.
It is compatible with following KangerTech products:
A. Toptank Mini Atomizer
B. Toptank Nano Atomizer
C. Topbox Mini Kit
D. Topbox Nano Kit
E. Subvod Kit
F. Subvod Mega Kit
G. Nebox
H. Subtank Mini Atomizer
I. Subtan Nano Atomizer
J. Subtank Plus Atomizer
K. Subox Mini Kit
Note:
1. Drip 2 drops of ejuice into top center of the OCC head before screw the head into the base;
2. After refilling the tank, please wait for 30 seconds before vaping.
Brand: KangerTech
Unit: 5pc/pack
Resistance: 0.2ohm/0.5ohm/1.2ohm/1.5ohm
Material: Nickel/Nichrome
Shipping weight: 72g
Package: Paper box