These coils are made from SS316 and are very diverse as they work in Temp SS mode, VW mode, and also in TCR mode. AIO BF SS 316 coils are high-performance coils with 0.5 ohms and 0.6 ohm resistance.
Joyetech Ego AIO Coils BF 0.5Ω DL 0.6Ω MTL SS316 - Pack Of 5 Replacement Coils -
(5-Pack) Authentic Joyetech eGo AIO / AIO 2 Coils (0.6ohm) (BF SS316)
5-Pack Genuine Joyetech eGo AIO 2 / Joyetech eGo AIO BFC Coils 0.8 ohm
(10-Pack/5-Pack) Genuine Joyetech eGo Aio MTL Coils BF 0.6 / Clapton 1.5 ohms
(5-Pack) Joyetech eGo AIO ECO BFHN Coils 0.5ohm Compatible with Skope S