This hollow crank Aluminum Bicycle Chainring is durable and wear-resistant, smooth and efficient, lightweight, easy to install and replace. Aluminum alloys are selected for demanding production, they are not susceptible to rust, are strong and wear-resistant, and also have a long service life. Using grease, high efficiency can drive the chain efficiently, saving labor. Lightweight design, less stress, comfortable for long-distance riding. Hollow Aluminum Bicycle Chainring design, effectively reduce weight while dissipating heat well. Different tooth numbers and colors are available, and users can choose the right tooth according to their needs. It can be used as a good replacement and maintenance part for bicycles to extend the service life and improve the cycling quality.