Take control of your day with the versatility and performance of ZRACE XDR 12-Speed Bicycle Flywheel/Cassette for Road/Gravel,10-28T / 10-33T / 10-36T / 10-44T CNC fully hollow and super light. Smart, efficient, and built to last — an essential in any collection. Browse and buy online at Keser.pl — trusted products at great prices.