The object is not sharply focused across from top to bottom. There is also a bit of chromatic aberration. The background could use some tidying up, and I would have cloned out the hanging hook. Had it not been rejected for technical reasons, it would have been rejected for an IP violation, since it is artwork that requires a property release.
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The lighting isn't good as it has produced shadows. I don't think the background is a good choice of colour as well.
There are numerous artefacts around and there is colour noise.
It's a pretty cool picture for being taken with a phone at ISO1000, but the errors in the image make it unusable for stock.
If you are new to stock, you should consider these resources: https://helpx.adobe.com/stock/contributor/tutorials.html
Please read the contributor user manual for more information on Adobe stock contributions: https://helpx.adobe.com/stock/contributor/user-guide.html
See here for rejection reasons: https://helpx.adobe.com/stock/contributor/help/reasons-for-content-rejection.html
and especially quality and technical issues: https://helpx.adobe.com/stock/contributor/help/quality-and-technical-issues.html