Couldn't find much about them online, but I have had a few sets of Metzelers on my motorcycle, and they were good tires, so I ordered a set last September.
Before I had 2 sets of Michelin City Grips.
Each set of Michelin's lasted 20000km, and they were OK, but honestly I wasn't very satisfied with them after a while.
Both front tires got a terrible wobble, and riding on wet was just plain bad.
So far I have around 5500km on these Metzelers and they are very, very good. No front tire wobble and I can actually lean in corners when its wet.
They were the most expensive set of tires for my scooter (Agility City 125), but don't regret paying extra for them.
https://www.metzeler.com/en-ww/catalogue/product/roadtec-scooterThese pictures were taken today
