What are the characteristics of American style pistol grip heavy duty hand grease gun？

The American style pistol grip heavy duty hand grease gun is a type of manual lubrication tool used to apply grease to machinery, bearings, and other mechanical components. Here are some of its key characteristics:

1. Pistol Grip: This type of grease gun has a pistol-style handle that allows for easy one-handed operation, making it comfortable to use for extended periods.

2. Heavy Duty: These grease guns are designed to withstand heavy use and are constructed with durable materials such as steel or aluminum.

3. High Pressure: American style pistol grip grease guns typically have a high-pressure output, which allows for precise application of grease to hard-to-reach areas.
   

4. Variable Stroke: Some models of pistol grip grease guns feature a variable stroke, which allows the user to control the amount of grease that is dispensed with each pump.

5. Bulk or Cartridge Loading: These grease guns can be loaded with grease in either bulk form or via pre-filled cartridges, providing flexibility for different applications.

6. Extension and Coupler: Most pistol grip grease guns come with an extension and coupler, which allow the user to apply grease to components in tight or hard-to-reach areas.

7. Easy to Clean: These grease guns are designed to be easy to clean and maintain, with features such as a removable head and wipe-down surfaces.