Sprocket assembly comes with bearing insert (138-4020). Fits on 25.4mm shaft. Sprocket transfers from 08B chain to 10B chain.
Old Part No. 113-357
Model SKU: 113-3057; Chain: 08B/10B; Teeth: 21/21; Shaft: 25.4mm
Sprocket assembly comes with bearing insert (138-4020). Fits on 25.4mm shaft. Sprocket transfers from 08B chain to 10B chain.
Old Part No. 113-357