Ritchey Pro 4-Axis 44 Carbon Matrix Stem: 100mm~ 84d 3D-Net forged 6061 alloy is encased in high-modulus cargon fiber for greater fatigue strength 4-Axis 44mm wide faceplate to better distribute loads and diminish linear clamp stress Angled steerer clamp helps prevent damage to lightweight aluminum and carbon steerer tubes Squared body shape provides more torsional stiffness Stainless steel taper-head bolts 42mm stack height 145 grams