A connector allows you to mount the pannier rack even your bike doesn’t have eyelets Easy to install; Attach any rear rack to your bike Made of high quality and durable steel Dimension (cm): 7 (L) x 1.5 (W) x 1.6 (H); Weight(g): approx 40 Package included: Bike Rear Rack Mount Adapter with Screws x 1 This U-shaped Bike Bicycle Rear Rack Mount Bracket Adapter is made of high quality and durable steel. It is a good bike rear rack bracket for your bike rear rack. Please contact seller if there is any problem.