ZTTO Gen2 Ultralight 12 Speed Road Bike Cassette 12s 11-30/34/36T CNC Freewheel Big Spider HG Sprocket ULT Gravel Cassette

High-concerned chemical：None Gears：12 Speed Material：Alloy Type：CASSETTE Brand Name：ZTTO Origin：Mainland China Components：Derailleurs

High-concerned chemical: None Gears: 12 Speed Type: CASSETTE Brand Name: ZTTO Origin: Mainland China Components: Derailleurs