Piaggio Brand  Bendix Pinion Starter Gear or Starter Bendix for Aprilia, Italjet and other PIaggio Bikes. I have no idea how we got this, but it is an original Piaggio part, in the original wrapper. OEM 431321, AP8550009, 

Imported from Italy by Scooterpartsclub.com

Fits Aprilia Scarabeo 100

Aprilia SR 125

Aprilia SR 150

Italjet Dragster 150

Various Piaggio scooters from the 1990s.