Synchromesh gears are mostly employed by modern day cars in the gearbox, which synchronizes the rotation of gears that happen to be messed. Such a gear removes the risk of gear clashing and helps make the shifting approach less difficult. This gearbox is someway much like a constant mesh gearbox. https://lukasrspkf.sharebyblog.com/33974662/automobile-gearbox-an-overview