I designed the screw covers for a German motorcycle license plate, however the screw covers should fit most EU-style license plates depending on your mounting hardware.

I designed 4 variations:

• 4 mm deep with 0.1 mm gap between screw head and cover
• 6 mm deep with 0.1 mm gap between screw head and cover
• 4 mm deep with 0.3 mm gap between screw head and cover
• 6 mm deep with 0.3 mm gap between screw head and cover

The screw I used had a 10 mm diameter