It looks like some kind of flat 4 core cable - similar to what is used for phone / modem flying leads in the UK (I don't know about the US). Try a search for modem cable. Without a screen and controlled impedance, it won't meet the USB spec, but it is probably ok for USB1.1.
I think the fitting of the molded on USB connectors would have been a custom job for that particular item, I suspect that you won't find a USB-A cable with anything other than standard round USB cable - but who knows what you may be able to find from China. Maybe you can source some more of those retracting reels, dismantle them and cut the other plug off (don't know your application and volume) - as I say, non-compliance (including EMC) may be an issue.