The pic is so small I can barely make them out as trucks. They look like modern roller bearing type as best as I can see, but no joy on which type beyond that.
Since these came off Red Caboose cars, they are most likely (but not 100% certain) the 1037 Barber Roller Bearing Trucks w/ medium extended couplers (truck on the left in your pic) and the 1038 Barber Roller Bearing Trucks w/ long extended couplers (truck on the right in your pic).
I apologize about pic. Lighting wasn't helping at all. I believe the long is the 1038. I think the medium is the 1024! Thanks for all the input!! I'm glad someone mentioned the 4 wheels! Good call!
I dont understand the problem seeing the pic. I open it in 'firefox' and click on it and it zooms in pretty good on my monitor...