It has higher strength, durability and has extreme resistance to abrasion.
The strong antioxidation makes it hard to rust to have a long service life.
Unique design of the gear sprocket exclusively for mountain bike, you can control the shift function well.
Hollow design, and the weight is reduced to some extent.
A fine appearance and will give you a luxurious feel.
This cassette is a cassette sprocket for 8-speed shift mountain bike. It is made of high tensile metal, durability and has extreme resistance to abrasion.  Features: It has higher strength, durability and has extreme resistance to abrasion.  The strong antioxidation makes it hard to rust to have a long service life.  Unique design of the gear sprocket exclusively for mountain bike, you can control the shift function well.  Hollow design, and the weight is reduced to some extent.  A fine appearance and will give you a luxurious feel.   Specifications: Material: metal Gear ratio: 11-13-15-18-21-24-28-32T Item weight: 200g / 7.1ounce Package size: 150 * 150 * 50mm / 5.9 * 5.9 * 2.0in Package weight: 380g / 13.4ounce Packing List: 1 * Flywheel