A automobile gearbox transmits electricity with gears. These gears are engaged and disengaged by gearbox-unique shifting mechanisms. A few other gears like 1st speed, second velocity, and reverse speed gear will also be rigidly fastened into the countershaft or also known as layshaft. Two gears mounted on the splined key shaft https://automobilegearbox06161.onesmablog.com/the-best-side-of-automobile-gearbox-74767596