The cover plate does not fit on the STROMER ST3 Sport stem!
To mount the cover plate on the STROMER ST3 Comfort stem, use the original screws.
You need the following material to assemble the plate and the body.
5 x M3 nut
1 x M3 40 mm Allen head
4 x M3 15 mm Allen head
2 x 2.5 mm zip ties with a length of approx 100 mm