The IKEA Ekedalen is an extendable table, the inner part has 2 gliders on each side (looks like they upgraded it to 3 now, so the dimensions might have changed!).
One of my gliders snapped of after putting too much weight on the table, so I've made a spare in PLA-CF, seems to hold up fine for now.
Remember to print it “flat” for the strongest part
The author marked this model as their own original creation.