CC, it's hard to get the size on both. Both, old on left and new on right, are just a tad under 1". The new 22mm is a little thicker and seems to be a tiny bit less dense. Either way, we're getting our 40#. I'll say this too. Purina screwed the pooch when there was an open door to be the only mill making large pellets available. They chose not to start backup, and I'm very OK with that. My fish were very aggressive eating the previous Optimal pellets, so everything worked out great getting the pellets from Endurance. I'm very happy, and my feed trained LMB are as well.

[Linked Image from i.imgur.com]

AL