Product Specification: Pen diameter: 8.5 * 5.5 * 2.5cmWeight: 159 gMaterial: stainless steel1. Portable and easy to install: The drawbar has vertical and horizontal holes. Whether the holes on your bicycle coupling are vertical or horizontal, they are perfect for you.2. Family fun can be achieved through additional trailer hooks, which can be equipped for both mom and dad's bicycles to pull children's trailers. Your child will enjoy a bike ride. One benefit: If your child is tired of driving, you can install them next to the bike.3. Sturdy and safe steel materials4. Compatible bicycle stand for multiple compatible compartments, suitable for most bicycles. Color: As shown in the picture Package includes: 1x bicycle trailer hook Attention: Due to manual measurement, please allow for a slight error. Please make sure you don't mind before bidding. 2. Colors may vary depending on the monitor, please understand. Hello, please pay attention to your shipping address when purchasing products. If your delivery information (such as name, street, house number, doorbell/email without name, etc.) is incorrect, the order will not be delivered correctly 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.