Aceshop bike handlebar stem is constructed of high-strength 7075 aluminum alloy, lightweight and durable, the bike stem is easy to install, just connect up the original front fork tube, it really makes the riding position much more comfortable and flexible, fit for the bike lover. Features: 1amline design, CNC hollowing process, it’s tough and light with a comfortable shape, reduce weight without losing strength. 2able for front fork diameter 28.6mm, handlebar diameter 31.8mm. And the center distance of the two holes is 50mm. Fit for most mountain bike and road bike. 3 to install and remove, just connect up the original front fork stems and the bar, tight all bolts with the allen keys included. 4 bicycle handlebar stem is ideal for most road bike, fixed gear bicycle, mountain bikes, downhill bike, track bike, MTB, BMX, DH, etc. Specifications: Material: Aluminum Alloy Handlebar Center Diameter: 31.8mm (1-1/4″) Stereer Tube Diameter: 28.6mm (1-1/8″) Length: 50mm Angle: 0° Color: Black Item Size: 31.8*28.6*50mm Package Weight: 250g Package List: 1 x Bike Stem 2 x Hex key wrench Welcome to Aceshop Store, may you have a pleasant shopping experience! Our products have been well tested before delivery. Customer satisfaction is our greatest aim, any problem please feel free to contact us and we will do our best to serve you!