All models listed with multiple axle sizes separated by a / include adapters for use with each axle configuration listed. Pairs using a - in the axle column refers to Front - Rear applications. Item Specifications: Size, 29in, Type, Tube Only, Brake Type, 6B, Axle, QR, Width ID (mm), 21, O.L.D., 100, Ft / Rr / St, FT, Rim Model, WEI XM280 Disc, Hub Model, W/M MT-2000, Wall, Dbl, Hub Color, Blk, Spoke Type, 14G BK, Valve, SV, Rim Color, Blk Disc, Spoke Count, 36H,.