A Grease Gun is a practical and essential hand tool used to apply lubricant (grease) to mechanical parts that require regular maintenance. It is widely used in automotive workshops, industrial machinery, agricultural equipment, and household maintenance tasks. The primary function of a grease gun is to deliver grease precisely to specific components such as bearings, joints, hinges, and other moving parts, ensuring smooth operation and reducing friction and wear.

This tool works by forcing grease through a narrow nozzle or flexible hose into grease fittings, commonly known as Zerk fittings. By delivering grease directly to the internal parts of machinery, the grease gun helps protect components from rust, corrosion, and premature damage. Proper lubrication also increases the lifespan and efficiency of equipment.