4" SDR 35 Hub saver

I have not for the life of me been able to find any SDR 35 hub savers. Plenty of SCH 40, but the diameter between the two pipes is different so it wouldn't theoretically clear out the hub well. I work with 4" SDR 35 daily as I do residential new construction repairs, so having this would save loads of time. Maybe I'm mistaken with the diameter, but still have not found basically any tools or bits for SDR 35. Can't even find a beveler. Any help is welcome and needed.