Features: brand new and high quality Full CNC Machined, Five-axis cutting machine. High strength and smoother surface. Made of premium aluminum alloy material, anti-deformation, anti-rust, sturdy, durable for long-time use. for Ideal for bicycle handlebar diameter 31.8mm. Fine workmanship, hollow design, difficult to break. Smooth surface, will not scratch your bike. Specifications: Material: Aluminum Alloy Installation Size of Front Fork Standpipe: 28.6mm Handlebar Installation Size: 31.8mm Stem Center Length: 80mm 60mm Weight: 80mm=123g 60mm=112g Note: Please allow 0-1cm error due to manual measurement. Make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x MTB Bike Stem.