Bypass hose fittings

Maybe I wrong. I thought they are 1". I'm going by looks and the fact the link says they are 1". I never actually measured them. I know they sure look bigger than 3/4. They're sure ALOT bigger than the 5/8 heater hose fitting.
Gotta leave in a few minutes but I'll look first thing in the morning when I get home. I just noticed the place on E-bay must be out of them now cause they don't show having any.