ztto superlight mavic mtb mountain road bike bicycle wheels rear hub freehub freewheel cassette spacer 7 8 9 10 11 speed 5pcs ztto superlight mavic mtb mountain road bike bicycle wheels rear hub freehub freewheel cassette spacer 7 8 9 10 11 speed 5pcs<br><br>spoke hole: 29 - 36<br>weight 1.5g per piece.<br>hight: 2mm<br><br>note: due to the light or display difference, the color of the product you recieved might be a little different from the pictures. that is not a quality issue.