Answer dh direct mount stem our dh stem is as strong as it is simple it is made of 7075 series alloy for maximum strength and features a wide faceplate for stiffness and evenly distributed clamp force three sets of offsets allow you to perfectly dial in your reach features weight 150g clamp diameter 31 8mm material 7075 series alloy hardware a2 stainless three offset positions adjustable reach wide faceplate increased clamp stiffness 7075 series alloy extremely high strength mat