Counter shaft: It can be the second most prominent gearbox portion and features different gears in several measurements which will make plenty of torque to propel the vehicle. Overdrive is particularly helpful for very long-length freeway driving, exactly where keeping a high speed with negligible motor hard work is useful.  https://automobilegearbox75172.dreamyblogs.com/34081511/5-tips-about-automobile-gearbox-you-can-use-today