bgm says:
"Replacement bolt for BGM PRO stainless steel rims.
Has a square as an anti-twist protection.
- For Lambretta rims 4 bolts are required.
- For Vespa rims 5 bolts are required."
Product safety information
Manufacturer information:
Scooter Center GmbH
Kurt-Schumacher-Str. 1
50129 Bergheim-Glessen
Deutschland
info@scooter-center.com
https://www.scooter-center.de