8/9/10 Speed Wide Ratio Cassette Cogs Color: Silver/Black Drivetrain Speeds: 8/9/10 Cog Material: Nickel-plated, offers Hard wearing resistance to corrosion Carrier Material: High Tensile Steel Recommended Use: Road cycling, Mountain biking Tooth ratio and weight: 8-speed 11-32T: 11-13-15-18-21-24-28-32T, silver, 283g 8-speed 11-36T: 11-13-15-18-21-24-30-36T, silver, 381g 8-speed 11-40T: 11-13-16-20-24-28-34-40T, Black+silver, 414g 8-speed 11-42T: 11-13-16-20-24-30-36-42T, Black+silver, 441g 9-speed 11-25T: 11-13-15-17-19-21-23-25T, silver, 236g 9-speed 11-28T: 11-13-15-17-19-21-23-25-28T, silver, 283g 9-speed 11-32T: 11-13-15-18-21-24-28-32T, silver, 318g 9-speed 11-36T: 11-13-15-18-21-24-28-32-36T, silver, 399g 9-speed 11-40T: 11-13-15-18-21-24-28-34-40T, Black+silver, 517g 9-speed 11-42T: 11-13-16-20-24-28-32-36-42T, Black+silver, 526g 9-speed 11-46T: 11-13-16-20-24-28-34-40-46T, Black+silver, 489g 9-speed 11-50T: 11-13-16-20-24-30-36-42-50T, Black+silver, 535g 10-speed 11-28T: 11-12-13-15-17-19-21-23-25-28T, silver, 288g 10-speed 11-32T: 11-13-15-17-19-21-23-25-28-32T, silver, 355g 10-speed 11-36T: 11-13-15-17-19-21-24-28-32-36T, Silver, 419g 10-speed 11-40T: 11-13-15-18-21-24-28-32-36-40T, Black+silver, 515g 10-speed 11-42T: 11-13-15-18-21-24-28-32-36-42T, Black+silver, 527g 10-speed 11-46T: 11-13-16-20-24-28-32-36-40-46T, Black+silver, 549g 10-speed 11-50T: 11-13-16-20-24-28-32-36-42-50T, Black+silver, 589g