When it comes to adventurous riding, a wider gear range is often better. The ADVENT cassette has the low gears to get up and the high gears to get back down. Steps between gears are optimized to give an even spread between shifts, reducing the need for double-shifting to find the right gear.11-46T range with even gear steps for predictable gear changes. Hardened steel cogs are optimized for eBike compatibility. ED black with anodized surface finish. Continuously forged precision cogs. Item Specifications: Cassette Body Type: / 8, 9, 10 Speed, Drivetrain Speeds: 9, Range: 11-46, Designed for ebike: Yes, Color: Black,