91-120748-12.7 = 71-90 1/2 HSS
91-120748-14.0 = 71-90 9/16 HSS
91-120748-16.0 = 71-90 5/8 HSS
91-120748-17.5 = 71-90 11/16 HSS
91-120748-19.0 = 71-90 3/4 HSS
91-120748-22.2 = 71-90 7/8 HSS
91-120748-25.4 = 71-90 1 HSS
91-120748-28.6 = 71-90 1 1/8 HSS