Looks like them but best to find a casting number on one of them and provide that. Someone will be able to verify that.
In any case, you have a bunch of goodies there.
Measure them up......D2 roller dimensions
Ovl width 5.94"
Ovl track width 4.75"
OD flange 8.00"
OD track roller 7.00"
Those are definitely D2 bottom rollers.
Our channel highlights machines from the earliest Holt and Best track-type tractors, equipment from the start of Caterpillar in 1925, up to units built in the mid-1960s.
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