Atmos Junior JR Heating Chamber is an essential part for the Atmos Junior Vaporizer. The heating chamber is made out of stainless steel coil which reached 400 plus Fahrenheit within seconds and the heat stays in the ceramic heating chamber. Atmos Junior JR Heating Chamber allows the hot air travel through the connector and vaporize the contents evenly. This will eliminate excessive waste of your dry herb. The heating chamber has 510 threading to fit all Atmos JR Vaporizers.