Mountain Bike Cassette Flywheel 9-speed 42T Bicycle Sprocket Cycling Accessories

Speically designed tooth shape: can realize inpecable shifting

Chrome-molybdenum steel with nickel-plated surface: anti-rust,wear-resistant,sturdy and solid, not easy to rust or break Light in weight: Easy to carry and store,convenient for daily use and replacement Easy to install: normal tools and operations can complete the whole processDescription Type Bicycle saddle Material polyurethane Applicable models mountain sports cars size one size Color 189 black red 189 black blue 188 black red 188 black blue Package List 1 seat Note The colors deviation might differ due to different monitor settings Manual measuring please allow 1 3mm errorthank you