CCM Step Blacksteel XSG 4MM Goalie Skate RunnersPure quality and high performance steel runners with polished sides to reduce drag on the ice. It reduces friction for a better stride and edging. Nano surface, Giga endurance: The carbon particles are nearly as hard as diamonds, reducing friction with water molecules and resulting in an exceptionally hard surface. Precision Redefined: We've been redefining skate blade quality standards since 2005. It all starts with a careful analysis of the physical