SunRace CSM680 8 Speed Bicycle Cassette 11-40T

Spec- 

Ratio: 11-40T

Combination: 11-13-15-18-22-28-34-40

Sprocket Material: Steel

Spacer Material: Engineering polymers

Lockring: Steel

Hub Spline Compatibility: HG-M Type

Speed: 8 Speed

Weight: 459g