Temperature range from -8°C to -14°C (18°F to 7°F). Recommended iron temp: 150°C (311°F). The 5 series is brand new for the Cera Nova X line, and fulfill a hardness gap between the 4 and the 6 series. It’s easier to apply than the 4 series, but provides outstanding glide properties within its temperature range, and has a great durability.The speed of the iron should be approximately 8-10 seconds on a skating or alpine ski. The wax can be re-heated after cooling to room temperature (10 min) for better durability. Scraping after approximately one minute. Important to have a good iron to get an efficient melting of the wax. Scraping after approximately, one minute. CH05X can be used as a race wax alone, but is often used as a base for Cera F powder, such as FC05X.