* Over 40% stronger, the strongest production seatposts on the market* Machined from one single piece of high strength 7000 series aluminum* Ellipse bore inside tube for optimum strength to weight ratio* Long 41mm seat rail grip length, helps prevent seat rail bending from impact loads* Clamp, head, and upper tube strong enough to withstand 350 foot-lb of torque* Lightweight - approximately 188 grams (250 length) for road bikes and 228 grams (330 length) for mountain bikes