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.
The surface made by the technology of chrome plating, no fading on the plated surface.
A fine appearance and will give you a luxurious feel.

Specifications:
Type: 9-speed, 10-speed (optional)
Material: steel
Number of tooth:
9-speed: 11-36T
10-speed: 11-36T
Item weight:
9-speed: 394g/ 13.9ounce
10-speed: 425g/ 15.0ounce
Package size: 155 * 155 * 60mm / 6.1 * 6.1 * 2.4in
Package weight:
9-speed: 420g/ 14.8ounce
10-speed: 435g/ 15.3ounce

Packing List:
1* Flywheel