GOOFIT 7 Teeth Gearbox Clutch Drum for 2-stroke 47cc 49cc Pocket Bike The item uses the T8F chain The segment spacing:8mm 7-Teeth Gearbox Arrival within 1-2 days (Sold by GOOFIT and Fulfilled by Amazon) Arrival within 7-15 days (Ships from and sold by GOOFIT)