One stem for endless possibilities. The HighSix OS is the perfect solution to give yourself all the freedom in the world. The HighSix OS can be adjusted between 40 degrees up -raising the bars up and closer to you, or 40 degrees down. The 80 degrees of movement can make all the difference. The HighSix OS makes every ride a comfortable ride. Bar Clamp: 31.8mm Steerer diameter (mm): 28.6mm (1 1/8") Angle: -30/+40 degree Extensions: 90, 110 and 130mm Weight: 264 grams For oversized trekking handlebars High angle for comfortable riding and improved steering control Low angle for speed and reduced wind resistance 3D forged 6061 T6 aluminum Stainless steel bolts