I designed this to add a knob to an IKEA microwave oven food splatter shield. The IKEA cover doesn't have a handle of any kind.
To Install: The screw is 15mm, so cut a hole about 16mm wide. Make sure the hole is not wider than 18mm or so or the knob will fall through.
This knob can of course be used for many other purposes.
Please post your comments and makes.