Copper Immersion Heater With Outside Tap Connector. To fit the adaptor, soak the hose for a couple of minutes in hot water. A copper immersion wort cooler, for bringing down the temperature of your wort after the boil. Made from Approx. 10 metres of 10mm copper tube. Cooled 20 litres of wort from boiling to 25 degrees C in around 10 minutes during testing. Made with 180 degree bends on the tail ends to prevent leakage into your wort. Comes fitted with 2 x 1.5 metre lengths of hose & jubilee clips. Hose can be replaced with standard Garden hose & tightened on with the clips if required.