??Wonderful flywheel for your bicycle.<br> <br> Features:<br> 8 speed cassette flywheel.<br> Constructed of zinc plated steel£¬ rustproof and super lightweight.<br> Number of teeth on each floor:11-13-15-18-21-24-28-32.<br> <br> Specifications:<br> Color: Silver<br> Material:Zinc plated steel<br> Weight: 345g / 12.2oz<br> <br> Package List:<br> 1 * 11-32T Cassette Flywheel<br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>  <br>