The correct size should be printed on them somewhere. I find it really difficult to believe that a rim marked with "dot com" with a brake rotor and hubs styled like that is going to be either of those ancient sizes. Neither of those are something normally used now. Anything close to that made in the last ten or fifteen years is very likely to be 650B / 27.5-inch size / ETRTO 584.
I don't know Hawk Racing but they have a website with a phone number
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Genesis 49:16-17
"Well, well!" said Holmes, impatiently. "A good cyclist does not need a high road. The moor is intersected with paths and the moon is at the full."