The PnP coils are available in four coil configurations, a 0.45 ohm M1 coil head rated at 28 to 35W, a 0.6 ohm M2 coil head rated at 20 to 28W, a 0.8 ohm R1 coil head rated at 12 to 18W and lastly a 1.2 ohm C1 coil head rated at 10 to 15W. Each pack of replacement coils come with five (5) per pack.