Welcome to our store！</br> 1、High Quality Material: It is made of high quality 6061T aviation aluminum. It is light, durable, not easy to wear and can be used for a long time. 2、Ergonomic Design: The ergonomic shape makes use of the efficient function of trampling to create more trampling traction. 3、Installation Method: The positive teeth correspond to the width of the chain teeth, and the negative teeth correspond to the narrow chain teeth. This is the drive motor chain adapter between for TSDZ2. You need to use your own compatible 104BCD chain. 4、High Compatibility: The chainring adapter is a universal type. It can be equipped with 34T/36T/38T/48T and other chainwheel after use. 5、Fine Workmanship: Manufactured with exquisite workmanship, to ensure the quality of products, making the electric bike chainring adapter durable and practical. <p class="wang-edit-text"><p class="wang-edit-text"><p class="wang-edit-text"> <p class="wang-edit-text"> <p class="wang-edit-text"> Item Type: Electric Bike Chainring Adapter Material: 6061T Aviation Aluminum Weight: Approx. 100g / 3.5oz Inside Diameter: Approx. 28mm / 1.1in <style> .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }</style> 1 x&nbsp;Electric Bike Chainring Adapter Satisfaction - Our customers are our top priority. If you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We try our best to provide you with satisfactoryaftersalesservice</br> Note: 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. Sold by-Minnanxin