The Rex NF Sisu Hard Black Racing Base Glider 80g is a robust fluor free glide wax designed for the foundation of new and stone-ground skis. This graphite-based wax creates a durable surface that can be used alone or as a base for NFX powders, especially effective in cold, fresh snow conditions. It excels in rough and abrasive weather, enhancing the ski's glide by making the contact surface more water-repellent. Tough graphite glide wax for new and stone-ground skis Forms a durable, wear-resistant surface Ideal for cold, fresh snow conditions Enhances water repellency and glide on new and mixed snow