Description: Carbon fiber material makes it lightweight and adds no pressure to the bike. Colorful screws and beautiful appearance make it more attractive to people. The ergonomics design lowers the position of the handle, which increases the control stability. The eccentric front cover design makes the handle and the faucet flat. Made of high quality carbon fiber 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 XC/AM mountain bike, road bike. Item Name: Bike Stem Material: Carbon Fiber Specification: -17 Degrees Features: Lightweight, High-Strength, Bicycle Components Size Details: Front Fork Diameter: 28.6mm/1.13" (Approx.) Handlebar Diameter: 31.8mm/1.25" (Approx.) 70mm: 10cm x 4.5cm x 4cm/3.94" x 1.77" x 1.57" (Approx.) 80mm: 11cm x 4.5cm x 4cm/4.33" x 1.77" x 1.57" (Approx.) 90mm: 12cm x 4.5cm x 4cm/4.72" x 1.77" x 1.57" (Approx.) 100mm: 13cm x 4.5cm x 4cm/5.12" x 1.77" x 1.57" (Approx.) 110mm: 14cm x 4.5cm x 4cm/5.51" x 1.77" x 1.57" (Approx.) 120mm: 15cm x 4.5cm x 4cm/5.91" x 1.77" x 1.57" (Approx.) 130mm: 16cm x 4.5cm x 4cm/6.3" x 1.77" 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