COMP 4-AXIS 30D STEM - Length: 60mm, 70mm, 80mm, 90mm, 100mm. - Material: 3D net forged 6061. - Angle: +/-30 degree. - Steerer Height: 45mm. - Steerer: 1-1/8”. - Faceplate Width: 40mm. - BB black finish. - The angled steer tube clamp slot reduces stress on carbon steer tubes.