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 was a demand from alpine and has been used with great success in World Cup over the last two seasons. Cross country is also discovering HF05BWX with great interest. The lower melting point compared to the 4 series makes it easier to work with, without sacrificing the good glide properties in cold conditions. HF05BWX is a new special wax with BW solid lubricant additive that reduces friction when very cold snow and dry friction conditions. The speed of the iron should be approx. 8-10 sec. on a skating or alpine ski. Recommended iron temp is 150°C (311°F). The wax can be re-heated after cooling to room temperature (10 min) for better durability. Scraping after appr. one minute. Important to have a good iron to get an efficient melting of the wax. HF05BWX can be used as a race wax alone or as a base for Cera F powder.