Somewhat better than basic windscreen seal locking strip insertion tool. This is a step up from a simple tool but not quite professional quality.

It WILL NOT work straight out of the box with the chrome strip I have for the windscreen seals. The wide tool is too wide and the narrow one too narrow so one of them will need to be modified a bit to fit. The wire they are made out of seems to be a little brittle (ask me how I know) so you MUST use heat when reshaping them. It's entirely up to you as to whether you squash the wider one in a bit or expand the smaller one (I'd lean towards expanding the smaller one).

The use of plenty of lubricant, such as dishwasing liquid, when installing the strip is highly recommended as it makes the job way easier.
Not really recommended for use on old hard seals as it will probably crack or tear the flaps but for a new soft seal it'll be fine.