I've tried two different wires so far. Lightning Vapes 316L 30/40 fused clapton wire has worked with replay for me in my Drop RDA, Dead Rabbit RDA, and my TM24 RDA. I can't get it to work in my Pulse 2 RDA though. The other I just tried today was some Kidney Puncher 24g 316L that I made some twisted coils with and replay doesn't like it so far.