... K); High Density; Certification: CE, UL,RoHS,ISO9001 cartridge heating element:2011 cartridge heating elementHigh Quality; with thermocouple(type J or K); High ... Density; Certification: CE, UL,RoHS,ISO9001Cartridge heating element:Diameter from 3.0mm to 50mm;Volt: 12V,24V,36V,48V,110V,230V,380V,450VWatt ... J,K or E;Wattage Tolerance+5%, -10% 2011 cartridge heating element