This is a 35x35mm furniture slider with drill holes
The drill holes allow you to position the slider correctly using a 6mm drill.
You can simple remix the project using tinkercad - https://www.tinkercad.com/things/eav4uE60Lym
I printed this with the DRAF settings of my Prusa Mini and were also able to place 16 pieces for 4 chairs onto the print plate.
I used ASA as a material but any other should work fine as well.
The author marked this model as their own original creation.