heater element,coils heaters, heater with thermocouple,special thermocouple,adjustable heaters . heater element,coils heaters, heater with thermocouple ,special thermocouple,adjustable heaters Diameter is 1.88 mm, inside diameter is 22 mm, the height is 53 mm, available dual-screw tight and get good heat tranfer. Voltage: 220V,230V,240V. Power: 220W -320W. OEM available.