Enhance your cycling experience with this MTB stem from Promend. Designed with a 31.8mm clamp diameter, this black stem is 90mm long 40 degress  perfect for mountain bikes. It is made of high-quality aluminum material, ensuring long-lasting durability. The threaded-less stem type and 1 inch steerer tube diameter make it easy to install and compatible with a variety of bikes. This purchase includes one stem, perfect as a replacement or upgrade for your current bike.