POLSO Bike Road Bike Hub, with Centre Lock which can match with disc brake or V-brake. This Road hub is 24h, lightweight but has 4 bearings built-in, made of Aluminium alloy AL6061 and axle AL7075, with good quality and performance. We are experienced at bike parts manufactured, we also have the Bicycle Wheel Set, the Crank Set and the saddle for your choice, welcome to contact us for more information.