Description: 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. Specifications: Condition: 100% Brand New Material: Aluminum alloy Color: Black, Red, Blue, Silver (Optional) Quantity: 4pcs 4Pcs/Set Size(Height): Approx. 5m/10mm/15mm/20mm Suitable for: 28.6mm Bicycle Front Stem Fork Package Included: 1 x Set of 4pcs Headset Spacer Please 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.