stailness steel material,single or double type.heater (electrical band heater,band heater,mica heater) heater (electrical band heater,band heater,mica heater)Material :stainless steelPower:above 3W/square MM.type:screws at both end,ceramic terminal oupout,cable output etc.size and watt can be made just according to customers' requests electric band heater element