Giant contact sl stem is a lightweight 3d forged 2014 aluminum construction stem with 318mm clamp diameter featuring titanium hardware with 8 flip flop adjustable risefeatures 3d forged 2014 aluminium alloy body with oversize box cross section oversized 46mm wide 6061 alloy faceplate recessed top cap and semi integrated upper spacer for increased steerer tube interface titanium hardware 1 14quot overdrive 2 steerer clamp 1 18quot steerer adapter included clamp diameter 318m