10PCS Bike Chainring Bolt Washers 1mm 2mm Crankset Spacer Gaskets MTB Road Bike
£6.39
For: If you have a two chainring chainring, you will need to change it to a single chainring. You will need to add a washer to the sprocket screw to secure the sprocket. MUQZI Chainring Bolts Washer.
