BLOCK TL STEM (BMX) - Features: 100% CNC machined from a solid billet of 6061 Aluminum for super high strength. - Reach: 50mm. - Stack height: 33mm. - Rise: 34mm (Upright) / 2mm Drop (Invert). - Clamp bolts: 8x1.25mm Hardened Chromoly (x4). - Pinch bolts: 8x1.25mm Hardened Chromoly (x2). - Steerer Diameter: 1-1/8". - Bar bore: 22.2mm. - Colors: Anodized Black, or Polished. - Weight: 13.75 oz. (390g.).