I got a cutlery rack that fits nicely in my kitchen drawers but they are very deep, and sort of a waste of space. So I made these little knobs to hold the rack at the top of the drawer so I can still throw junk underneath it. Screw hole is 4mm, countersunk to about 9mm for a variety of screws. "Height" of knobs is 15mm. I am sure these can also be used for other things like legs/feet for other projects.