DuPont™ Slide Runners - Style 2 - Up to 144" LengthCaracteristicas: DuPont Vespel material inserts Space age polymer composite material, that is stronger than hardened steel, aluminum, or even titanium 15T scale Rockwell hardness of about 80 (UHMW slide runner hardness rating is about R64) Capable of withstanding extreme friction and heat environments Pieces are placed at a 30 degree angle across the entire slider for constant contact and even wear Made using compression molding process Lightweight,