ODIER Bike Headset Spacer 6Pcs Aluminium Alloy Bicycle Stem Headset Spacers Fit 1 1/8-Inch Stem Compatible with MTB Bike Road Bikes 2mm 3mm 5mm 10mm x 3 (Black) 1-1/8" Headset Spacer Set Includes one each: 2mm,3mm, 5mm, 10mm x3. Black anodized aluminium alloy, CNC finished. Buy light weight MTB pedal together and get 8% off. ASIN: B07CJV2KTQ NOTE: if you go for heavy duty off road ride, you should use aluminum spacers other than carbon spacers.