Probably the best 3-point disc ever built. Don't know what they weigh but it'll dig like it weighs a ton! Gangs are adjustable (with levers by 3-point hitch mast. I won't go all the way out on the end of a limb and say they didn't have roller bearings as an option, but I will go as far as to say I've never seen one with roller bearings and my parts manual doesn't show such.
Cast "boxings" for bearings. NLA from AGCO/Massey. They will work just fine with a LOT of slack though.
The #25 does a great job of leveling a seed bed.