The Powerslide Sabres W4 Ice Blades for 4-wheeled skates in a FLAT setup provide high-quality performance on ice. They are pre-sharpened, with a hardness of 54±2 HRC. The set includes spacers for an 8 mm axle; for a 6 mm axle, the Fothon Spacer 6 mm adapter is required. Available in sizes S/M for rail lengths of 219, 231, and 243 mm.