Rims: Evo Tour 19 27'' ETRTO 630-19 Inner width: 19mm 6061-T6 Alloy Double Wall Silver Drilled for Schrader valve Rim Brake compatible 36 holesFront hub (-01): QR 9x100mm (Binder included) 6061 Alloy Black Adjustable bearings Rubber sealsRear hub (-02): Bolt-on 10x130mm 6061 Alloy Black Adjustable bearings Rubber seals FreewheelRear hub (-03): QR 10x130mm (Binder included) 6061 Alloy Black Adjustable bearings Rubber seals FreewheelAssembled in North America by experienced wheelbuilders with Sapim stainless steel spokes and 14mm Brass Polyax Nipples Attributes Rim Color Silver Rim Internal Width 19mm Rim Model Evo Tour 19 Wheel-Brake Comp. Rim Valve Schrader Depth 20mm Spoke Type Sapim Rim inner width range 0-21.9mm Rim Construction Double wall Rim Material Aluminum Skewers Included Yes Rim Drilling 36 Wheel Diameter/ISO 27'' / 630 Wheel Tire Type Clincher Freehub Body Freewheel