Features:The material of high tensile steel made by the technology of quench-temper hardening, makes it more durable and has extreme resistance to abrasion.The unique design of the gear sprocket exclusively for mountain bike, provides you a better experience to control the shift function.We adopted the hollow design to reduce the weight to some extent.The surface made by the technology of chrome plating, makes it hard to rust and provides a long service life.If you hear squeaks or noises from your drivetrain, you should check if your cassette cogs were weared out. You don't need to change the whole cassettes anymore, because you can easily find what you need from our shop. Specifications:Brand Name:ZTTOMaterial: AluminumComponents:FreewheelFreewheel Speed:8/9/10/11Gear Teeth: 11T/12T/13TPackage size: 130 * 110 * 20 mmColors: silveryPackage Included:1 x Cassette Replacement Cog Notes:1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures.2. Due to different personal measuring techniques, there might be 1-3cm error of the physical. Thank you!
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