Topload stemMaterial: 6061-T6 aluminiumReach (mm): 50Extra info:center bore hole for reduced weight,6mm micro head hollow bolts,unique offset rear for improved clamping,material saving and unique look,recessed top bolt for clean look,includes set of regular 6mm solid bolts,can be ridden upside down as wellWeight (kg): 0.302Color: black, gold, oilslick, high polished