This is a 11-speed version of the PG1070 cassette, designed and developed for FORCE22, FORCE CX1. Semi-spider construction provides high level shifting performance Number of Gears: 11 Gear Ratio: 11-25: 11, 12, 13, 14, 15, 16, 17, 19, 21, 23, 25, 11-26: 11, 12, 13, 14, 15, 16, 17, 19, 21, 23, 26, 111-28: 1111111111-28: 1111111, 28: 11. 12,13 (14, 15, 16, 17, 19, 22, 25, 28) Weight: 8.5 oz (247 g) (11-26), 9.8 oz (257 g) (11-28) Recommended Chain: SRAM PC1170 Chain: Product color and size may differ from the actual product depending on your display type. Product specifications, logo design, etc. may be subject to change for product improvement. We also cannot answer measurements or personal fit that the manufacturer does not announce. Please be aware of