The same width as the 11 Speed cassette meaning total compatibility with wheels and frames The addition of the twelfth sprocket allows a linear upshift or downshift by a single tooth, up to the seventh gear, allowing the cyclist to find the perfect ratio for any situation The two largest triplets in a single piece which reduces energy losses Special surface treatment increases durability and improves smoothness Closer sprockets ensure faster, quieter and more precise shifting 11-29t 12sp 11,12,13,14,15,16,17,19,21,23,26,29 Silver 266gUPC/EAN/GTIN: 8053340450877