a new wax with an improved recipe, proven to be significant better than the old hf7. a versatile wax suited for normal winter conditions below the freezing point. its hardness makes it convenient to work with and easy to get a good end-result. the speed of the iron should be approx. 8-10 sec. on a skating ski. the wax can be re-heated after cooling to room temperature (10 min) for better durability. important to have a good iron to get an efficient melting of the wax. hf07x can be used as a race wax alone, but is often used as a base for cera f, such as fc07x and hvc cold (fc60l).