The N-Line is Rex`s new race line of fluor-free grip wax to replace the fluoro Pro-line waxes. These waxes are designed with Dual Compound technology, perfect ratios of pressure-sensitive and temperature-sensitive materials, and N-Kinetic technology, for glide and dirt repellence. The N-Line waxes are great on their own or as mixers and covers. The N41 is a klister/hardwax combo that is great for old, transformed snow, as well as man-made. It is best used in -2°C to -15°C. The N41 is specifically a good replacement for the Fluoro TK-1814 Racing Service Line Wax.