ZTTO 8 Speed 42T Bicycle Cassette - Lightweight Hollow Design MTB & Road Bike Sprocket - Compatible with Shimano & SRAM Derailleurs - Perfect for Mountain Biking, Road Cycling & Commuting

Feature: 1. It is made of high-strength steel and adopts temper hardening technology, which has higher strength, durability and strong wear resistance. 2. Strong oxidation resistance makes it difficult to rust and has a long service life. 3. The unique design of the gear pinion for mountain bikes allows you to control the shifting function well. 4. The flywheel adopts a hollow design, which reduces weight to a certain extent. 5. Easy to install and use, it is an important and practical accessory for bicycles. Specification: Condition:100% Brand New Item Type: Bicycle Flywheel Speed: 8 speed Material: Steel Gear ratio: 11-13-16-20-24-30-36-42T Package List: 1 x Bike Flywheel 3 x Accessories

It is made of high strength steel and adopts the temper hardening technology, which has higher strength, durability and strong wear resistance.

It is made of high strength steel and adopts the temper hardening technology, which has higher strength, durability and strong wear resistance.

Strong oxidation resistance makes rusting difficult and has a long service life.

Easy to install and use, it is an essential and practical accessory for bicycles.

The flywheel has a hollow design which reduces the weight to some extent.

The unique design of the gear for mountain bikes allows you to control the shift function well.