Description: With CNC integrated process, the bike chainring has high strength and is suitable for long time use. The round shape design makes the chain more consistent and reduces the chain loss. With extended edition positive and negative teeth design, the chain can have a better effect. You don't need to install chain guides and worry about losing the chain. It can help the vehicle to reduce the weight of about 1kg. Made of high quality aluminum alloy material, the product is sturdy, wear-resistant and durable. The specifications of the product is 32T/34T/36T/38T, which is optional. It's suitable for bicycle, mountain bike, road bike, etc. Item Name: Bicycle Chainwheel Material:Aluminum Alloy Color: Black, Red Specification: 32T/34T/36T/38T Craft: CNC Size: Black,32: 13.8cmx13.8cmx0.2cm/5.43inx5.43inx0.08in Black,34: 14.5cmx14.5cmx0.2cm/5.71inx5.71inx0.08in Black,36: 15cmx15cmx0.2cm/5.91inx5.91inx0.08in Black,38: 15.5cmx15.5cmx0.2cm/6.1inx6.1inx0.08in Red,32: 13.8cmx13.8cmx0.2cm/5.43inx5.43inx0.08in Red,34: 14.5cmx14.5cmx0.2cm/5.71inx5.71inx0.08in Red,36: 15cmx15cmx0.2cm/5.91inx5.91inx0.08in Red,38: 15.5cmx15.5cmx0.2cm/6.1inx6.1inx0.08in Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. There are various specifications to be optional for you. Please make sure your crank BCD is 104BCD before purchase. Package Includes: 1 X Bicycle Chainwheel