The 3T ARX-PRO Aluminum Bicycle Stem is a high-quality, durable component designed specifically for road bikes. It features a sleek black and white color scheme, with a clamp diameter of 31.8mm and a steerer tube diameter of 1 1/8 inches.Made of aluminum, this ahead stem is lightweight yet sturdy, providing a smooth and reliable ride for your cycling adventures. The set includes the stem itself, making it a convenient and essential addition to your bike. it is 130 mm long.