rojo0550

I have a Chicago Electric(anyone have one of these?)Power Tools VSR 3/8 inch keyless chuck drill that is need of a replacement chuck. I checked the chuck mounting shaft for wrench flats,but can not find any!! I have a Jacobs chuck,1/2 inch jaw with 3/8 inch threaded mount,but don't know if this will work on my Chiacgo Electric drill. Both this drill and the Jacobs adapter chuck were bought from Harbor Freight Tools some years ago.