Package：5 PCS bike handlebar stem spacers in 2 sizes: 5mm /10mm，1 PCS headset top cap,1 PCS headset star nut,1 PCS bolt provide various combination to adjust height of handlebars to fit your riding style
Material: Bicycle headset spacers threadless are made of black/red/blue/gold anodized aluminum alloy material with smooth surface and exquisite workmanship, eco-friendly, sturdy and durable to use
Compatibility:Stem spacers road bike inner diameter is 28.6mm，1-1/8" headset spacer set, compatible with 28.6mm front stem fork of MTB, BMX, mountain bike, road bike etc
Suitable of most road bikes,durable to use.Perfect to get a good fit on your bike.
Notes: if you go for heavy duty off road ride, you should use aluminum spacers other than carbon spacers, durabale due to automatic cutting, smooth edge, fit most of the road bicycles
