With die-cast heating element Mini and portable design Ideal for heat preservation Made of iron Easy to clean,Compact and portable Net weight:2.30kgs Gross weight:3.0kgs Diamenter:185mm+155mm(150mm for 4 tube+125mm for 3 tube) AC220-240V/110V 50-60Hz POWER:2250/2500W Quantity(20’):1516 Quantity(40’):3303 Quantity(40HQ’):3819