Description:Fine workmanship and beautiful appearance make it more attractive to people. It is a good choice as a gift for people who like cycling.You can use the stem to achieve a more comfortable riding position. Lightweight design makes it add no pressure or weight to your bike.Made of high quality carbon fiber and aluminum alloy material, it is durable.There are many lengths for you to choose from. The front fork diameter is 28.6mm and handlebar diameter is 31.8mm.It is suitable for mountain bike, road bike.Item Name: Bike StemMaterial: Aluminum Alloy,Carbon FiberColor: BlackAttribute: 60mm-120mmFeatures: Lightweight, High-Strength, Bicycle ComponentsSize Details: Front Fork Diameter: 28.6mm/1.13" (Approx.)Handlebar Diameter: 31.8mm/1.25" (Approx.)60mm: 9cm x 4cm x 4cm/3.54" x 1.57" x 1.57" (Approx.)70mm: 10cm x 4cm x 4cm/3.94" x 1.57" x 1.57" (Approx.)80mm: 11cm x 4cm x 4cm/4.33" x 1.57" x 1.57" (Approx.)90mm: 12cm x 4cm x 4cm/4.72" x 1.57" x 1.57" (Approx.)100mm: 13cm x 4cm x 4cm/5.12" x 1.57" x 1.57" (Approx.)110mm: 14cm x 4cm x 4cm/5.51" x 1.57" x 1.57" (Approx.)120mm: 15cm x 4cm x 4cm/5.91" x 1.57" x 1.57" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x Bike Stem