Description About this item Made of aluminum alloy material,CNC cutting and good workmanship Various size for you to adjust the height,anodized in rainbow color,it’s also a decoration for your bike. Works with front fork tube diameter: 1-1/8″, 28.6mm headset spacers Light weight and easy to install,fit for most Mtb Road bike 28.6mm fork tube. Rainbow Headset cover kit include: 10mm spacersx2pcs,5mm spacersx2pcs, 2mm spacersx2pcs,M5x35mm bolt x1pc,Stem cap x1pc