Our VOR threaded inserts for rectangular tubes have a metric thread that is obtained directly from the mold in the injection process and that allows the subsequent installation of elements such as leveling feet or wheels, as you can see in the example shown in the video.
The gliders are made of PA6 (Polyamide 6) in black, they have wings for a better hold inside the tube and are ideal for use in furniture with legs from 20x20 to 50x50 mm and tube thicknesses. from 1.50 to 2.00 mm.
We also have the square version, our family VER