9-speed Bike Flywheel 25t Highway Multi-stage Cassette Transmission Bicycle Sprocket Silver

Description

It is made of high tensile steel and made by the technology of quench-temper hardening. So it has higher strength, durability and has extreme resistance to abrasion. Adopted the hollow design, and the weight is reduced to some extent. The surface made by the technology of chrome plating. There is no fading on the plated surface. Easy to use, very suitable for bicycle enthusiasts