EKAR 13 speed cassettes are optimized for 3 different riding options including endurance, gravel race and gravel adventure Ranges and steps designed specifically with the ability to perform on and off the beaten path 10-44t13sp10,11,12,13,14,15,17,19,22,26,32,38,44SilverEKAR CS21UPC/EAN/GTIN: 8053340455476