Features 1.Standard Tooth Design: The standard tooth design ensures optimal chain retention, extended life, reduced friction and noise, and improved grip. 2.104mm BCD Size: 104mm BCD size, more compact and simpler, also greatly improves the speed, more convenient for your use. 3.Safe Travel: 104BCD chainring cancels gear shifting, reducing the driver's energy when shifting gears, allowing the driver to concentration more on riding. 4.Aluminum Alloy: Bike chainring is made of aluminum alloy material, which is light in weight but high in strength, resistant to deformation and durable. 5.Easy to Install: The transmission ratio can be changed continuously without changing the front and rear gears at the same time, which is easy to install. Specification Item Type: 104BCD Gear Disc 52T Material: Aluminum Alloy BCD: Approx. 104mm / 4.1in Package List 1 x 104BCD Gear Disc 52T