RACEFACE STEM,ATLAS,DIRECT MOUNT BLUE 31.8x50/30RaceFace Atlas Stems Intended for downhill or freeride use Machined from AL 6061 T6 with Interlocking U shaped handlebar faceplate Four bolt bar clamp holds bar securely in position Mount upright for 30mm length (24mm offset height from crown) Fly inverted for 50mm length (8. 5mm offset height) slight negative rise to allow for a lower front end Item Specifications Color Blue Weight 162g Intended Use DH Freeride Bar Clamp Diameter 31. 8mm Stem Length