NOS Ford rod bearings for Flathead Ford V8,  81A-6211-U. Rod bearings at -.030 on rod journals with +.008 OD, material is nickel-cadmium or copper lead.  Fit 1938, 1939, 1940, 1941, 1942, 1943, 1944, 1945 engine with 91A and 21A connecting rods on crank with 1.998" STD rod journals, or later flathead crankshafts ground or offset ground to 1.968".  These bearings are not flanged. 

For a better and easier way to size rod big ends, see my "Early Ford V8 Times" article from Jan/Feb 2006 on this site under Red's Engine Talk: "Oversize OD Rod Bearings".