The first picture is a product picture, the other pictures are sample displays MTB Bike Stem 31.8x45mm Short Handlebar Stem Aluminum Alloy Bicycle Bridge Racing Downhill Stem for Handlebar Bicycle Parts Features: *1. It is made of high-strength CNC machined 6061 T6 aluminum alloy. *2. The frosting process is very delicate. *3. Suitable for handlebar with diameter of 31.8mm. *4. Four bolt bar clamp holds bar securely in position. *5. Easy to install, includes installation wrench, just connect up the original front fork stem. Description:  *1. Material: Aluminium alloy *2. Color: Black, Gold, Blue, Red, Green (optional) *3. Handlebar diameter: 31.8mm *4. Fork diameter: 28.6mm *5. Weight: 120g /4.2oz Package List: 1 * MTB Stem Notes: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.