96BCD Positive and Negative Gear Plate Bike Single-speed Disc/Oval Modified Tooth black_96bcd disc 34T

Description

Made from aluminum material, light weight, water-proof, anti-rust and durable. Single - plate positive and negative tooth design, do not need to install the guide chain. Two shapes are optional, disc or oval plate. Three specifications, applicable to the AM/XC bicycle modified single disk. It is easier to quicken pedal frequency when the road is flat, and easier to make the force when riding uphill.