The Shimano 9v cassette HG400 11-28 is a high-quality cassette for your bike. This cassette has a silver color and is available in an 11-28T gear range. This means the cassette has sprockets with 11 to 28 teeth, resulting in various gear options. A larger sprocket at the rear provides an easier gear, while a smaller sprocket provides a harder gear. The Shimano Alivio CS-HG400 cassette uses Shimano's Hyperglide technology, resulting in smooth and precise shifting performance. The sprockets are made of durable and lightweight steel, making them resistant to wear and ensuring a long service life. Product specifications - Brand: Shimano - Shimano groupset: Shimano - Shimano groupset code: M4000 - Model year: 2014 - Number of gears: 9 speed - Shimano type: HG - Gear ratio: 11-28T - Material: Steel