Why do you care? At lengths this short the "quality" of the cable stock is practically irrelevant. Just get a cable of the length you need. If there's a problem you'll know because it won't work.
That being said, if you cannot be dissuaded by facts and just want to be able to say you have the best, blue-jeans does offer their F2 bonded-pair cable in 1-foot increments starting at 1-foot. I would not recommend their better F2 cable (which starts at 3ft) because the cable is extremely large and not flexible, and would be a bad choice for such short lengths. And as far as cable stock, you won't find better anywhere. But again, hugely unecessary. I think I have a couple of their shorter bonded-pair cables simply because I was ordering other things at the same time so i included them in the order so as not to rack up spurios shipping charges. But otherwise there's no reason to spend more than a couple bucks on such short cables.