11*1.0 (outside diameter 11±0.1, inside diameter 9±0.01) 16*0.6(outside diameter16±0.05, inside diameter 14.8±0.01)
12*0.75 (outside diameter12-0.02, inside diameter 10)
12*1.0(outside diameter12-0.2, inside diameter 10)
11*1.0 (outside diameter 11±0.1, inside diameter 9-0.01 )。