A manual transmission demands the driving force to manually select the gears[six] by working a gear adhere and clutch (which will likely be a foot pedal for autos or possibly a hand lever for bikes). Spur and helical gears are used in the sliding mesh gearbox to act. Spur https://jeffreyobjtd.ampedpages.com/not-known-factual-statements-about-gearbox-60774667