The Atlas 35 stem was designed to reduce overall system weight while retaining the proven stiffness and performance the Atlas line is known for. 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 provides extreme clamping power while reducing stress on the steer tube Laser etched logos