IKEA Table - Cable Organizer

some parts to organize the cables behind the desk without showing much under or over.
wide and non wide version have 7mm difference, non wide is 14mm wide inside and the wide has 21mm
height of my table is 33.8mm

don't know the size of the screws needed but i have a picture under of the screw and settings i made for the hole.
length of the screw might not matter but longer is better because ikea tables are kinda hollow in the middle parts, they are more dense where the feet are
the sizes of the screw in the picture is 39.77mm long, 7.8mm head, 3.87mm threads