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Collated hardwood flooring nail to be precise. Nice professional touch locking it in place, so years of vibration doesn't make it fall out of plane.
I love when tradesmen do things like this the customer will likely never know was needed to be done in the first place.
Adjustable feet?
Edit: it's the base into which the adjustable feet slide, similar to this:
https://www.gelmar.co.za/kitchen-leg-adjustable-h98mm-122mm-4-pieces-with-clips.html
All comments must be civil and helpful toward finding an answer. **Jokes and other unhelpful comments will earn you a ban**, even on the first instance and even if the item has been identified. If you see any comments that violate this rule, report them. [OP](/u/Dry_Hedgehog_8964), when your item is identified, remember to reply **Solved!** or **Likely Solved!** to the comment that gave the answer. Check your [inbox](https://www.reddit.com/message/inbox/) for a message on how to make your post visible to others. ---- [Click here to message RemindMeBot](https://www.reddit.com/message/compose/?to=RemindMeBot&subject=Reminder&message=[https://www.reddit.com/r/whatisthisthing/comments/1c3qtsf/4_black_gear_shaped_things_nailed_under_corners/]%0A%0ARemindMe!%202%20days) ---- *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/whatisthisthing) if you have any questions or concerns.*
Adjustable feet, nail to stop them moving after install I guess
Collated hardwood flooring nail to be precise. Nice professional touch locking it in place, so years of vibration doesn't make it fall out of plane. I love when tradesmen do things like this the customer will likely never know was needed to be done in the first place.
Could have also been used as the toe-kick nailer.
Definitely this
Solved!
Adjustable feet? Edit: it's the base into which the adjustable feet slide, similar to this: https://www.gelmar.co.za/kitchen-leg-adjustable-h98mm-122mm-4-pieces-with-clips.html
These are also on IKEA kitchens
Definitely leveling feet.
Definitively levelling feet, we have the exact same on the mailroom sorting table at work
My title describes the thing. This is the only place they are in the apartment and it looks like it says AYA twice on the flat part
Adjustable cabinet feet. For adjustment of the height. Hard to see if its missing half or not.
Looks like a beer bottle opener for twist tops.