OEM Piaggio Clutch Nut for Leader 125, 150 and 200cc Scooters, and Variator Nut for the LEM 150 and Quasar 250 and 300 Scooters. This fits the Clutch shaft on all Vespa, Piaggio, Aprilia and other Scooters with the 125-300 CC Leader engine. This is a GENUINE Piaggio Product.