FSA's OS-150 stem is 3D forged and then CNC machined from AL6061 for strength, and was given the carbon fiber composite 4 bolt front clamp for style. This little beauty is an excellent upgrade for anyone. Offered in either black or all white with a carbon fiber faceplate.Weight: 160g (100mm)Finish: Black anodized or Painted white with protective clear coat6 degree angle