crank and bearings

So i have got 2 cranks here trying to choose which one to send to the machinest for a polish.
There doesnt seem to be and scores or marks where the bearings sit so thats good right?
What size (diamiter) should it be to find out what size bearings i need?
What size are the normal acl bearings?

check the size of the bearings that came off the crank rods
make sure they are fully checked for hairline cracks, especially on the bigend journals

Hey guys! I didn't want to open another topic, so please share where do you buy your acl bearings(race version preferably? I'm talking Europe only ,cause I'm in a hurry with a rebuild right now and I have gtir rods, but I'm failed to find 4B2976 STD bearings. Please help! Thanks! Peter

il pm you a link tomorrow as its on my other pc