Wakrays Mountain Bike Bicycle Rear Luggage Rack Carrier Seat Racks Black Design with high quality aluminum alloy and quick release. Suit for: Mountain Bike, Road Bike etc.; Capacity: 10kg Rack Size: L33.0 x W11.5cm/ 12.87 x 4.49 inch Fit Seat Post Diameter: 2.6-3.0cm/ 1.01-1.17 inch Package Content: 1 x Bike Carrier Rear Rack