GOOFIT Complete Clutch Assembly Rear Clutch for GY6 49cc 50c 139QMB Scooter Taotao Roketa Sunl Outer Diameter (pulley): 119mm,outer Diameter (clutch bell): 115mm Inner Diameter (clutch bell): 107mm;Inner Diameter (clutch): 12mm Fit for all GY6 49cc 50cc Chinese brand like Taotao Roketa Sunl Kazuma Jonway Znen Redcat Eagle Xtreme Yiben SSR Vento Arrival within 1-2 days (Sold by GOOFIT and Fulfilled by Amazon) Arrival within 7-15 days (Ships from and sold by GOOFIT)