Wheel Factory hand built wheels WTB ST i30 rims provide the perfect mix of weight and strength Light enough for your next XC race and robust enough to handle that after work shuttle ride 30mm ID is ideal for wide knobby tires up to 2.6mm Shimano SLX M7110 hubs come equipped with Center Lock brake mounts Built with DT Swiss Competition double butted spokes (2.0/1.8/2.0) and black brass DT Swiss Squorx nipples Hand laced and trued in the USA