CHAIN SHEAVENUMBER 41 ON DIAGRAMWIDTH OUTER RING B1 (mm) 36MAX INNER RING D2 (mm) 35WIDTH INNER RING B2 (mm) 21OUTER DIAMETER D3 (mm) 100.8WIDTH OF THREAD B3 (mm) 26MAX OUTER RING D1 (mm) 111REF NUMBER LS1858