DT Swiss X1900 Spline 25 Ratchet Wheelset is a set of two black aluminum wheels with a 29-inch wheel size and tubeless tire type. The wheelset is compatible with mountain bikes and features a disc brake and presta valve type. The set includes a front and rear wheel with a 25mm inner width and a weight of 1960g. The wheelset has a 15x110 front and 12x148 rear boost and 6 bolt HG.