Gears are mechanisms or devices used to change the rotational speed and torque between driven elements. They can be used in a variety of machines and devices, from simple rack-and-pinion mechanisms to advanced drive systems in vehicles.

A bevel gear , also known as a bevel gear or bevel gear, is a special type of gear that is used to transmit power between shafts rotating at different angles. It is a key element in mechanisms and devices where it is necessary to change the direction of rotation or transmit power in a small space

A worm gear is a type of gear train that consists of two main components: a worm and a worm wheel. It is an advanced mechanism used to transmit power between shafts, usually perpendicular to each other.