Temperature range from -2C to -8C (28F to 18F). Recommended iron temp: 140C (284F). 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.