Prebuilt Clapton Coils 0.8Ω A1 20pcs & 20pcs Shoelace 100% Organic Cotton for RDA RBA RDTA Tanks - Prebuilt Coil Vaping Accessories - Plastic Tub (20PCS Coil & 20PCS Cotton)

These coils heated up very quickly, too quickly for proper Kanthal.I suspect they are very inferior ultra-high Carbon Chinese wire. Not even A1.While initally seeming OK, after about 10-20 puffs I devoloped a dry throat which turned into a really chesty hacking cough! Never had that in 12 year's of vaping.They probably give off toxic fumes... AVOID these.I have returned to my REAL Swedish Kanthal® single strand. All well now.5.5T 25.5 AWG on 3mm i/d = 0.9 Ohm.