![Replacing friend's cassette. Found spacer. Is a 10 speed cassette. Don't know if it is 11 speed hub. Do I keep or throw? : r/bikewrench Replacing friend's cassette. Found spacer. Is a 10 speed cassette. Don't know if it is 11 speed hub. Do I keep or throw? : r/bikewrench](https://preview.redd.it/9sj3p1q1iex71.jpg?width=640&crop=smart&auto=webp&s=fbb8ff02dd8ddd0d6097b070075bce0a67d8a9f8)
Replacing friend's cassette. Found spacer. Is a 10 speed cassette. Don't know if it is 11 speed hub. Do I keep or throw? : r/bikewrench
![5pcs 1.85mm 2.0mm Bicycle Cassette Low Spacer Hub Cog Ring For 11 12 Speed Wheels Sprocket Shim - Bicycle Freewheel - AliExpress 5pcs 1.85mm 2.0mm Bicycle Cassette Low Spacer Hub Cog Ring For 11 12 Speed Wheels Sprocket Shim - Bicycle Freewheel - AliExpress](https://ae01.alicdn.com/kf/HTB10apRaXzsK1Rjy1Xbq6xOaFXa0.jpg_Q90.jpg_.webp)
5pcs 1.85mm 2.0mm Bicycle Cassette Low Spacer Hub Cog Ring For 11 12 Speed Wheels Sprocket Shim - Bicycle Freewheel - AliExpress
![Amazon.com : AEcreative 10pcs Bike Bicycle 7 8 9 10 11 Speed Cassette freehub Spacer 1mm 1.5mm 2mm 2.5mm 3mm Bottom Bracket Washer BB : Sports & Outdoors Amazon.com : AEcreative 10pcs Bike Bicycle 7 8 9 10 11 Speed Cassette freehub Spacer 1mm 1.5mm 2mm 2.5mm 3mm Bottom Bracket Washer BB : Sports & Outdoors](https://m.media-amazon.com/images/I/61ek9vz6EML._AC_SL1000_.jpg)