Grease guns are commonly used for tasks that require lubrication. There are three types:
- Hand-powered With Hand Cranked Trigger: With this gun the grease is forced from the aperture by back-pressure built up by hand cranking the trigger mechanism of the gun.
- Hand-powered With No Trigger Mechanism: Similar to the hand cranked trigger gun, except instead of the hand-cranked trigger, the pressure is built up by pushing on a plunger on the butt of the grease gun.
- Air-Powered (Pneumatic): This grease in this type of gun is forced through the aperture via air pressure.