Compatible with models:

Vespa Largeframe:
PX and PX "Arcobaleno" (PX 125, PX 150, PX 200, P125X, P150X, P200E, PX125E, PX150E, PX200E) series, up to approximately 1995
Vespa T5
Vespa GS / Super Sport 150
Vintage and classic models: VNA, VNB, GT, GTR, TS, Super, VBA, VBB, GL, Sprint, Rally, early Vespa 125 series (V1T, V15T, V30T, VM1T, VM2T, etc.)

Piaggio Cosa:
Piaggio Cosa CL, CLX