The default delivery is black rim with black hub and black spokes. If you need silver hub and silver spokes, please leave a message when you place an order. This wheel set features V-brake rotary hub installation with rotary flywheel, supporting 6/7/8 speeds, and V-brake card type hub installation Cassette flywheel, supporting 7/8/9/10 speeds. The rims are made of double layer aluminum alloy, and the hub is made of aluminum alloy. The bearing is 2Bearing, and the O.L.D. is Front 100mm Rear 135mm. The spokes are 45 # steel spokes, and the tire pad is high pressure tire pad. The weight of the wheel set is about 1760g.