Roller Lifter Identification

Demonracer said
Look at "440source" to see if they might have a match.

These ones from 440 source look like them but have no specs. Anybody know who make the lifters for 440 source? I'm going to contact them and ask the specs.

https://store.440source.com/Solid-Roller-Lifters-Set-of-16/productinfo/200-1118/