GOOFIT Universal 7/8" Throttle Lever Thumb Control Assembly for 50cc 70cc 90cc 110cc 125cc ATV Quad Go Kart Throttle Lever Thumb Control Assembly Thumb throttle with speed control governor so small kids can't go too fast Spanner length: 82mm straight spanners; Installation diameter: 7/8" Arrival within 1-2 days (Sold by GOOFIT and Fulfilled by Amazon) Arrival within 7-15 days (Ships from and sold by GOOFIT)