The Joyetech Ego One Coil (Pack of 5)
Available in 0.5 ohm.
Unscrew the metal bottom cap from the tank.
Pour out any remaining E-Liquid (set aside to refill)
Unscrew the old head from the bottom cap.
Screw the new head onto the bottom cap.
Fill tank with E-Liquid and reassemble
For best results, wait a couple minutes for the E-Liquid to feed the coil before vaping again.