Key Features:6061-T6 aluminum.,Four bolt bar clamp holds bar securely in position.,Interlocking U-Shaped Handlebar Clamp Geometry.,Faceplate eliminates stress risers which cause your bar to bend or break.,Opposing bolts on steer tube clamp gives extreme clamping power while reducing stress on the steer tube.,Available in 1 inch 1/8th with a 31.8mm bar clamp only,Laser etched logos..Specification:Built for: AM/XC/DH,Sizes: 50mm, 65mm,Rise: 0 degrees,Bar diameter: 31.8mm,Stack Height: 40mm,Weight: 150 grams (50mm), 170 grams (65mm).