Wirepid pid4m Wall-Mounted Clothesline, Post-Installation Clothesline, P.I.D.

I purchased this this year and tried to install it, but the wall behind it seemed to be concrete, and the screws wouldn't go in.
I haven't used it, but since I opened it and tried to install it partway, I'm listing it as near unused.
There's no problem with the product itself, so I'm reluctantly selling it.
I bought it on Rakuten for 6,600 yen.

The following is quoted from Rakuten.

Extend the wire and dry when you want to.
This indoor clothesline allows you to extend the wire and easily hang laundry when needed.
We've reframed indoor drying not as a negative necessity (can't dry outside, so dry inside) but as an enjoyable activity.
We developed this indoor clothesline wire with the image of a lifestyle where laundry, a symbol of daily life, becomes part of the interior along with pid.

[Minimalist design that blends into any space]
To ensure it can be used for a long time, we've created a discreet design that blends into your interior without being overly assertive.

[Always prioritizing the user's perspective]
We've also paid attention to safety, designing it so that the wire retracts slowly even if you accidentally release the tab.

Main unit: Width 87mm x Height 121mm x Depth 60mm, Hook cover: Width 60mm x Height 75mm x Depth 11mm