TOOGOO(R) Mountain Bike / Bicycle Rear Carrier Rack - Black Load Capacity: Approx. 10kg / 22 lbs Size ( L x W ): Approx. 13 x 4.6 inch / 33 x 11.7 cm Clamp Inner Size: Approx. 1.2 x 0.85 inch / 3 x 2.1 cm Material: Aluminum alloy Color: Black