OEM Piaggio roller weight set. These are 19mm x 15.5mm and weight 5.3 grams each.
These were found in many Piaggio bikes including but not limited to
04-14 Aprilia SR50 Factory and SR50 Ditech Factory *Piaggio Engines
04-19 Vespa Primavera 50
14-18 Vespa Sprint 50
10-14 Vespa LX 50 4t 4V
13-18 Piaggio Fly 4t 4V
OEM part number CM1102035