Crown 4 replacement coils are available in four options (1)Dual SS904L Coil 0.2 Ω = 70-80 W (2)Dual SS904L Coil 0.4 Ω = 60-70 W (3)SS304 UN1 Coil 0.25 Ω = 55-65 W (4)FeCrAl UN2 Coil 0.23Ω = 60-70 W