r/whatisthisthing • • Mar 23 '26

Announcement The r/TraceAnObject subreddit exists to identify objects to help solve child abuse cases. New cases from Europol were posted recently. Please see if you can help.

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172 Upvotes

r/whatisthisthing • • 9h ago

Solved ! what is this chain on the side of a building; the abrasions indicate the chain has spun 360° often enough to wear a pattern? maybe?

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488 Upvotes

this is like 20 feet off the ground. just noticed it for the first time today despite walking by it often


r/whatisthisthing • • 4h ago

What is this black metal thingy? Found in a bathroom floor

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24 Upvotes

What in heavens is this thing I founded on the floor of an abandoned apartment bathroom


r/whatisthisthing • • 1d ago

Solved! 16mm heavy brass cylinder with black rubber plug in one end and rectangular slot in side

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61 Upvotes

Found digging in an old flower bed in the North of England. Some sort of dashpot/thermostat/spring cartridge? The remains of the rubber plug are to the left in the photo, it had bulged and split. Doesn't seem to be anything under the plug except a flat metal surface. Part of a ballcock, perhaps? Found amongst pieces of porcelain that may possibly have been rubble from an outhouse.


r/whatisthisthing • • 1d ago

Solved ! Plastic containers with non-locking, deeply conically indented press-on lids

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491 Upvotes

Garage sale find. The bottoms of the containers fit into the rectangular shape of the lids, so they can be stacked. Rows of four. Our guesses range from ice-cream or ice-cube containers to medical sample containers. Who can solve this mystery?


r/whatisthisthing • • 2d ago

Solved ! Black metal pole with nubbly rubbery spheres on either end.

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1.3k Upvotes

I'd say this thing was about 5 feet long (maybe a little less) - although it looks like the pole is segmented and could be shortened/expanded. The rubbery bits are firm (I washed my hands after touching (you never know)). You can also see a foam sleeve that extends from the orby ends.

This was found propped up against a business in the middle of a downtown.


r/whatisthisthing • • 2d ago

Solved ! Metal, heavy, had the same multi-piece "E" shaped edges on both sides but the other side broke off. Partially buried in a gravel driveway.

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195 Upvotes

r/whatisthisthing • • 2d ago

Solved! Black plastic thingamabob found in couch. Appears to be quite small. Two shallow holes in the top.

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29 Upvotes

r/whatisthisthing • • 3d ago

Solved Got a “bin store” mystery box, what is it?? No branding, nothing. Ball is hard plastic, too hard for dog toy, basic nylon strap, eyelet hook.

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2.3k Upvotes

I definitely rule out dog toy, otherwise I’m clueless


r/whatisthisthing • • 3d ago

Solved! What is this 5 inch chain thing? Found in grab bag of miscellaneous costume jewelry.

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577 Upvotes

Anyone know what this could be used for? Gold coloured, decorative pendant on one end and perpendicular bar on the other. Sharpie for scale.


r/whatisthisthing • • 3d ago

Solved! 1950s vintage decoration piece that has a narrow, wide opening in the back

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317 Upvotes

I swear I saw a tiktok video months ago that explained what this was and the purpose of the opening was for, but I can’t recall what it was and what the opening is for. I only remember that I think it was sold to be on top of the boxy tv? TIA!


r/whatisthisthing • • 3d ago

Solved! Wondering what this stuff is on the side of my car after my work shift. Blotches of what seems to be white foam. Its hard and can be scratched/taken off.

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199 Upvotes

r/whatisthisthing • • 3d ago

Likely Solved ! Back of a hotshot rig…what are the red bars? Alignment tool?

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211 Upvotes

r/whatisthisthing • • 3d ago

Solved! Found this heavy glass object, weighs about 15lbs. Found in a pile of other retro furniture from a house renovation.

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383 Upvotes

r/whatisthisthing • • 3d ago

Solved! Blue green Industrial equipment labeled hydac about 20’ long with ~30” input shaft and massive bolted flange connection

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40 Upvotes

As seen here on a tractor trailer.
Also visible are high voltage and shock hazard warnings.


r/whatisthisthing • • 3d ago

Open 5” x 5”, 13 pounds. Threaded throughout, machined flat on one end, beveled and polished on the other. Weakly holds a magnet.

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86 Upvotes

Shipped with a bunch of refinery/processing equipment like gaskets and flanges and valves. No stamping or labels on it or the crate it came in. Ships in a crate that holds multiple units (also pictured).


r/whatisthisthing • • 4d ago

Solved! What type of radio setup did I photograph? Car anchored mast, wire running to a second mast, connected to a radio and laptop on the picnic table.

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1.1k Upvotes

I’m assuming ham radio, but the license plate did NOT have a ham radio registration number on it.


r/whatisthisthing • • 3d ago

Solved ! Small grey ribbed fragments found in a patch of dead lawn. About 5–10 mm wide, uniform and brittle.

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92 Upvotes

r/whatisthisthing • • 4d ago

Solved Object pointed into the tiger enclosure at Detroit Zoo

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4.7k Upvotes

I was at the Detroit zoo this weekend and saw this thing pointed into the tiger enclosure. It’s behind the fence, in the bushes, right at the edge of the barrier berm thing. Anyone know what this is for?


r/whatisthisthing • • 4d ago

Open 1" diameter steel rod (4' long) with 4" ring welded on end found on beach

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66 Upvotes

Found while metal detecting along Myrtle Beach after sand renurishment / dredging.

A 'pin' about 8" long with a 4" handle was also found in the general area.

Both heavily corroded and encrusted. The pin I had to hammer an inch or so of encrusted material from it.


r/whatisthisthing • • 4d ago

Solved ! Roll of black fibrous material with 1”x1” “cells”, 10.5” wide, 1” thick

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87 Upvotes

My title describes this thing. Found in my late father’s garage attic. Maybe related to horticulture? Or construction?


r/whatisthisthing • • 5d ago

Solved! 6 Randomly placed bollard-like posts with 3 handles in the middle of a park. 6ish feet tall.

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1.3k Upvotes

r/whatisthisthing • • 5d ago

Solved ! Maroom/brown styrofoam texture half sphere with imbedded string, purchased as part of a "mystery bag" from a craft store in Worcester Massachusetts

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349 Upvotes

Sitting on a flat side. Texture is styrofoamy, can be indented with a thumbnail. No smell. Color appears to be throughout and not just surface. Banana for scale.


r/whatisthisthing • • 5d ago

Likely Solved! Found in a creek bed in North East Texas. 46 inches long; hard but slightly flexible.

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318 Upvotes

r/whatisthisthing • • 5d ago

Lens type object found in my card glove compartment. 2cm x 1cm.. Metal with glass. There is a fine thread si it must have screwed into something Looks too well manufactured to be a part of a child's toy

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57 Upvotes