... ,seat clamp 2.aluminum alloy 3.dia. of stem:27.2/30.8/31.6 Handlbar Namebicycle handlebarModel ... NO.AL+AS+SPColorblackAttributegroup setMaterialaluminum alloyItemhandlebar,stem,bar end,seat post,seat clamp Specifications and Advantagescan ... radiationaluminum alloy, so the weight is light enoughincluding handlebar,stem,bar end,seat post,seat clamp Packing and Delivery ...