3D forged and internally machined 7050 alloy body * 30% stiffer than Ritchey"s legendary WCS 4-Axis stem, and 20 grams lighter * 4 x M4 faceplate bolts and patented 260 degree bar clamp design reduces weight , increases stiffness, and distributes stress more evenly * 3 x M4 steerer tube bolts and curved clamp slot reduces weight and steerer tube stress * Fits most road and mountain bars