1:14 1:19 1:27 Dual Shaft Planet Speed up or Speed Reducer Gearbox Double Axis Planet Gear PLS36This is 36mm diameter gearbox, we even have 42mm, 56mm and so on. if desire different model, touch us.The planetary gearbox can expand or lower the output speed. You can want the product that suits you according to your individual needs.This link is for tools ratio Stage2(1:14, 1:19) we also have other ratio from 1:3.71 to 1:100, if need different equipment ratio, order different link or touch us.The most immediate might speed up to 25,000 rpm, But it is strongly recommended that the utmost output speed within 10,000 rpm,The information of the speed increaser:Installation dimension:The first picture is for gear ratio of 5.18, 27, 139, (One end Shaft Diameter is 8mm-Milling edge 1mm, and the alternative end Shaft Diameter is 6mm -Milling edge 1mm).L=37mmL=38mmThe moment photograph is for tools ratio of different besides of 5.18/27/139.(Both ends Shaft Diameter are 8mm-Milling edge 1mm)The label faces the output shaft of the rate increaser., and the increaser can be used as a reducer in reverse.