Yuauy 4 Kinds Black Bike Chainring Crankset Shim Offset Spacer Gasket 0.5/1/2 mm Aluminum Alloy Cycling Chainring Adapter Adjust Clearance Friction Fine-Tune Washer for 3-Bolt

["Package included: 1 x 0.5 mm direct Chainring Crankset Spacer + 1 x 0.5 mm Chainring Crankset Spacer + 1 x 1 mmChainring Crankset Spacer + 1 x 2 mm Chainring Crankset Spacer","There are 2 kinds of Chainring Crankset Shim Offset Spacers and 3 thinknesses (0.5mm, 1mm and 2mm) in one set to meet your different requirements","They are made of high quality Aluminum Alloy which is light strong and durable","These Chainring Crankset Shim Offset Spacers are designed to adjust the chain alignment","They are easy to install with special design"]