Shimano WH-RX570 rear wheel The Shimano WH-RX570 wheels are made for exploring off-road and off-trail. They deliver reliable performance in a wide range of conditions. With a wider internal rim width of 21.6mm, the GRX wheels are suitable for robust tubeless gravel tires. They are equipped with center lock disc brakes and twelvemm thru axles. The RX570 wheels, which are made to withstand the rigors of gravel riding. Specifications: Color: black, blue Gender: unisex Material: aluminum Series: GRX DI2 Weight: 951 grams Brake type: center lock disc brake Axle mounting mode: E-THRU Rear gears: 11/10-speed Tire type: tubeless Number of spokes: 24 Fork spacing: 142mm Axle diameter: 12mm Tire size: 32-622, 42-622 Inch size: 27.5 inch