FLUOR FREE. A wax for extreme cold conditions, which can perfectly be used alone as a race wax when the air humidity is low. It performs very well on artificial snow and has a great durability. The speed of the iron should be approx. 8-10 sec. on a skating or alpine ski. The wax can be re-heated after cooling to room temperature (10 min) for better durability. Scraping after appr. one minute. It's important to have a good iron to get an efficient melting of the wax. Scraping after appr, one minute. In the warmer part of the temperature range, and when high air humidity, a powder or other top coat product will increase the performance. Recommended iron temp: 155Â°C (311Â°F). Replaces the CHX4.