Straitline pinch clamp 15 stemcombining stylization more commonly seen on high end sports cars with the simplicity of traditional pinch clamp designs the split pinch clamp offers weight reduction and added clamping force the stem has tremendous torsional rigidity due to a combination of its extra wide boxy cross section and the use of 6mm high strength alloy steel fasteners at a ridiculously low weight straitline split steerer clamp stem 15 features31 8mm handlebar clamp0 degree rise