This FMFXTR All Mountain Series Adjustable Angle Head Stem D-STEM-01 is a perfect addition to your mountain bike. The stem is made of high-quality aluminum material and has a sleek black color that matches any bike frame. The handlebar clamp diameter is 31.8 mm, and the steerer tube diameter is 1 1/8 inches, making it compatible with most mountain bikes.This stem is designed for maximum durability and stability while riding. Its adjustable angle head allows you to customize the viewing angle and achieve a comfortable riding position. Made in China, this stem is a reliable choice for any cycling enthusiast. Upgrade your mountain bike with this top-quality stem today!