MTB 9 Speed 11-40T Cassette Freewheel Mountain Bike Bicycle Parts ( #: Y17325B )

Features:
High-tensile steel ensures high strength and abrasion resistance.
Anti-rust antioxidation provides long service of life.
Hollow design reduces the weight. Each weighs about 438 grams.
Suitable for 9-speed mountain bikes.

Specifications:
Material: Steel
Color: Black / Black & Silver (optional)
Range: 11- 40T
Weight: Approx. 438g / 1.0lb

Package List:
1 * Freewheel