Rims: WTB DX18 27.5'' (ETRTO 584), inner width: 18 mm Anodized black finish CNC machined sidewalls Stainless steel eyelets Rim wear indicator Pinned joint Drilled for Schrader valve 36 holesFront hub (-01): Alloy, Disc and Rim brake compatible, Quick Release, Hollow CrMo axle M9x100mm Anodized black finish Adjustable bearings with rubber seal Quick Release Binders IncludedRear hub (-02): Alloy, Disc and Rim brake compatible, Shimano HG, Quick Release, Hollow CrMo axle M10x135mm Anodized black finish Adjustable bearings with rubber seal Quick Release Binders IncludedRear hub (-03): Alloy, Disc and Rim brake compatible, Freewheel, Quick Release, Hollow CrMo axle M10x135mm Anodized black finish Adjustable bearings with rubber seal Quick Release Binders IncludedAssembled in North America by experienced wheelbuilders using Sapim 14G Stainless Steel spokes (Black) and 14mm Brass Polyax Nipples (Black) Attributes Rim External Width 23.5mm Skewers Included Yes Axle Type QR Wheel Tire Type Clincher Rim Construction Double wall Rim Drilling 36 Rim Internal Width 18mm Wheel-Brake Comp. Rim and Disc IS 6-bolt Rim Color Black Depth 18mm Spoke Type Sapim Rim inner width range 0-21.9mm Wheel Diameter/ISO 27.5'' / 584 Rim Material Aluminum Valve Schrader Rim Model WTB DX18