Good question!
I have a set of those and I can measure them up for you. What I can tell you for sure is that there are different widths for pallets depending on if you grab from the side or front, also plastic pallets appear to have different spacing than wood.
I have some IBC totes and those fork holes are very narrow, too narrow for the carryall.
Lastly, the TS carryall uses angle iron and as such is thicker than many forks. You are likely fine in dirt and uses like that, but if you're trying to grab things on pavement or concrete, you will likely ruin the ground trying to grab the pallet.
I plan on using the torch to get rid of the "corner" on the angle iron and make more gradual approaches so I can slip my carry all under the skid or whatever without ruining the ground.