Toastmaster - See Middleby Marshall 3103902 Blower Wheel, 9-7/8" Diameter, Shaft Bore 5/8" 2-1/8" Wide, Flat Back Changed To Concave Back., Ccw Smooth Hub Changed To Puller Hub., 2 Set Screws. Added Key Way & Key., Hobart Oven Cn & Most Other Convection Ovens., Vulcan Oven, Southbend Mh36 Rh36, Toastmaster Oven