>>> - This magnetic induction heater set includes 10pcs coils(ɸ30mm Coil 2,ɸ40mm Coil 2,ɸ50mm Coil 2, ɸ50mm Flat Coil 2, 600mm length coil 1, 1000mm length coil 1). 👍 Magnetic Induction Heater Kit. >>> - The hand-held Magnetic Induction Heater features air vent at the end.