Gear Shift Drum for Automobile Industry has the feature that when gear shifting lever is moved, it rotates the drum one increment. The Gear Shift Drum ensures that the rotation causes the rods or forks to move according to the grooves in the drum, changing the gears. The Gear Shift Drum is used in automobile industry. The Gear Shift Drum for Automobile Industry is made using quality grade grey coloured cast iron and spherical graphite cast iron.