description of goods:Our headset spacer is made of high-quality aluminum alloy material, sturdy and durable to use. They are lightweight and easy to install, having smooth surface and exquisite workmanship. 4 different sizes into one pack could fit for your demand and meet different needs. They are suitable for 28.6mm bicycle front stem fork. Features: Made of high-quality aluminum alloy material, eco-friendly, sturdy and durable to use. Lightweight and easy to install, having advantages of smooth surface and exquisite workmanship. Perfectly suitable for 28.6mm front stem fork of mountain bike, road bike etc. 4 different size(5mm/10mm/15mm/20mm) into on pack, they could fit for your demand and meet different needs. Available in 4 colors, just choose the color you like. Spezifikations:Condition: 100% Brand NewMaterial: Aluminum alloyColor: Black, Red, Blue, Silver (Optional)Quantity: 4pcs4Pcs/Set Size(Height): Approx. 5m/10mm/15mm/20mmPackage Weight: Approx. Suitable for: 28.6mm Bicycle Front Stem ForkPackage Included:1 x Set of 4pcs Headset SpacerPlease Note:1. Please allow 0-1inch errors due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.