A grease gun is a mechanical tool designed for lubricating machinery or equipment with grease. It typically consists of a metal tube, a nozzle, and a handle. Here's how it generally works: Metal Tube: The metal tube is filled with grease, which is a thick lubricating substance used to reduce friction and wear between moving parts in machinery. Nozzle: The nozzle is attached to the end of the tube. It is designed to fit onto grease fittings, which are small openings in machinery that allow the injection of grease. Handle or Trigger Mechanism: The handle or trigger mechanism is used to manually pump the grease from the tube through the nozzle and into the grease fittings. To use a grease gun, you load the grease into the tube, attach the nozzle to the grease fitting on the machinery, and then pump the handle or trigger. This action forces the grease into the machinery's moving parts, ensuring they remain well-lubricated. Grease guns are commonly used in automotive, industrial, and agricultural settings to maintain the proper functioning of various mechanical components. They play a crucial role in preventing wear and extending the life of machinery by reducing friction.