Product description for the ZIPP Stem Service Course +-6° boasts lengths of 90-130 mm and an angle of +-6° for the ultimate customized fit. The stem is expertly crafted from Aluminium 6061 and features a bar clamp diameter of Ø31,8 mm and a steerer diameter of 1-1/8". Complete with an Aluminium faceplate and steel bolts, this stem is also compatible with the Zipp Quickview integrated computer mount. Professional, informative, and objective, this description is sure to impress any industry expert with its use of facts and percentages.