Description The Shimano RX180 Disc Brake Rear Wheel is the all new GRX tubeless ready gravel wheel. This lightweight aluminium tubeless ready wheel with a HG L Spline freehub. Compatible with tubeless tyres from 32mm to 50mm wide. Shimano RX180 Disc Brake Rear Wheel Specs Rim Type: Rear Rim Diameter: 700c Rim Inner Width: 25 mm Rim Height : 21 mm Material: Aluminium Axle: 12mm Thru Axle Freehub: HG Spline L (Road 12/11 Speed) Bearing Type: Sealed Bearing OLD: 142 mm Brake Type: Centerlock Disc Spoke Count: 24 H Bead Type: Hooked Tubeless Shimano Product Identifier: WH-RX180-TL-R12-700C