comfortable fit with a greater impact protection

Pack contains two insert barrel bushings

grip and acceleration at these wheel sizes

welded sole

Rollerblade Hydrogen Pro X-Firm 125mm Wheels 6-Pack Size:6-Pack comfortable fit with a greaterHydrogen Pro wheels are made in the USA with the highest quality materials, standards and attention to details to be used during all race conditions and leisure skates for consistent, top end performance on road, track, long distance and sprints. provides the extra speed required for athletic competitions. excellent, consistent performance, superior control in turns, great speed all track speed competitions They incorporate a multi layer technology,